Egyptian women gather to buy subsidised oil from a government truck, after goods shortage in retail stores across the country and after the central bank floated the pound currency, in downtown Cairo, Egypt, November 7, 2016. REUTERS/Mohamed Abd El Ghany 

Egyptians gather to buy subsidised sugar and oil from a government truck, after goods shortage in retail stores across the country and after the central bank floated the pound currency, in downtown Cairo, Egypt, November 7, 2016. REUTERS/Mohamed Abd El Ghany 

Egyptians gather to buy subsidised sugar and oil from a government truck, after goods shortage in retail stores across the country and after the central bank floated the pound currency, in downtown Cairo, Egypt, November 7, 2016. REUTERS/Mohamed Abd El Ghany 

Egyptians gather to buy subsidised oil from a government truck, after goods shortage in retail stores across the country and after the central bank floated the pound currency, in downtown Cairo, Egypt, November 7, 2016. REUTERS/Mohamed Abd El Ghany 

Egyptians gather to buy subsidised sugar and oil from a government truck, after goods shortage in retail stores across the country and after the central bank floated the pound currency, in downtown Cairo, Egypt, November 7, 2016. REUTERS/Mohamed Abd El Ghany 

A man smiles as he carries subsidized sugar and oil after buying them from a government truck, after goods shortage in retail stores across the country and after the central bank floated the pound currency, in downtown Cairo, Egypt, November 7, 2016. REUTERS/Mohamed Abd El Ghany 

People line up next to graffiti that reads, "Venezuela without shortages, 6E the change arrives", while they try to buy cooking oil and milk, outside a supermarket in Caracas March 11, 2016. REUTERS/Carlos Garcia Rawlins 

People sit next to graffiti that reads "Venezuela without shortages, 6E the change arrives", while they line up to try to buy cooking oil and milk, outside a supermarket in Caracas March 11, 2016. REUTERS/Carlos Garcia Rawlins 

A man rides a bicycle as he passes tanks of gasoline in Kasserine, Tunisia January 30, 2016. A litre of fuel is priced at 1.5 Tunisian dinars ($0.74). A dramatic drop in oil prices, driven down by a glut in supply, is translating into a mixed bag for motorists. All countries have access to the same oil prices on international markets, but retail prices vary wildly, largely because of taxes and subsidies. REUTERS/Zohra Bensemra SEARCH "THE WIDER IMAGE" FOR ALL STORIES TPX IMAGES OF THE DAY 

A sign showing the price of unleaded petrol at 101.9 pence ($1.46) a litre is seen in a raindrop on a car window at a Texaco gas station in central London, Britain January 26, 2016. A dramatic drop in oil prices, driven down by a glut in supply, is translating into a mixed bag for motorists. All countries have access to the same oil prices on international markets, but retail prices vary wildly, largely because of taxes and subsidies. Picture rotated 180 degrees. REUTERS/Stefan Wermuth SEARCH "THE WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY 

BP gas station signage is seen as a passenger plane makes its final landing approach to Heathrow Airport in west London, Britain January 30, 2016. Unleaded petrol is priced at 101.9 pence ($1.44) per litre. A dramatic drop in oil prices, driven down by a glut in supply, is translating into a mixed bag for motorists. All countries have access to the same oil prices on international markets, but retail prices vary wildly, largely because of taxes and subsidies. REUTERS/Toby Melville SEARCH "THE WIDER IMAGE" FOR ALL STORIES TPX IMAGES OF THE DAY 

A dramatic drop in oil prices, driven down by a glut in supply, is translating into a mixed bag for motorists. All countries have access to the same oil prices on international markets, but retail prices vary wildly, largely because of taxes and subsidies. SEARCH "THE WIDER IMAGE" FOR ALL STORIES TPX IMAGES OF THE DAY 

A worker sells subsidized food commodities at a government-run supermarket in Cairo, Egypt, February 14, 2016. Tens of millions of Egyptians rely on state subsidies provided as credits on smartcards they redeem against household staples each month. But in recent weeks, imported commodities like cooking oil have been in short supply as a dollar shortage makes it harder for state importers to secure regular supplies. Picture taken February 14, 2016. REUTERS/Mohamed Abd El Ghany 

A worker sells subsidized food commodities at a government-run supermarket in Cairo, Egypt, February 14, 2016. Tens of millions of Egyptians rely on state subsidies provided as credits on smartcards they redeem against household staples each month. But in recent weeks, imported commodities like cooking oil have been in short supply as a dollar shortage makes it harder for state importers to secure regular supplies. Picture taken February 14, 2016. REUTERS/Mohamed Abd El Ghany 

A worker sells subsidized food commodities at a government-run supermarket in Cairo, Egypt, February 14, 2016. Tens of millions of Egyptians rely on state subsidies provided as credits on smartcards they redeem against household staples each month. But in recent weeks, imported commodities like cooking oil have been in short supply as a dollar shortage makes it harder for state importers to secure regular supplies. Picture taken February 14, 2016. REUTERS/Mohamed Abd El Ghany 

A worker sells subsidized food commodities at a government-run supermarket in Cairo, Egypt, February 14, 2016. Tens of millions of Egyptians rely on state subsidies provided as credits on smartcards they redeem against household staples each month. But in recent weeks, imported commodities like cooking oil have been in short supply as a dollar shortage makes it harder for state importers to secure regular supplies. Picture taken February 14, 2016. REUTERS/Mohamed Abd El Ghany 

A worker sells subsidized food commodities at a government-run supermarket in Cairo, Egypt, February 14, 2016. Tens of millions of Egyptians rely on state subsidies provided as credits on smartcards they redeem against household staples each month. But in recent weeks, imported commodities like cooking oil have been in short supply as a dollar shortage makes it harder for state importers to secure regular supplies. Picture taken February 14, 2016. REUTERS/Mohamed Abd El Ghany 

A worker sells subsidized food commodities at a government-run supermarket in Cairo, Egypt, February 14, 2016. Tens of millions of Egyptians rely on state subsidies provided as credits on smartcards they redeem against household staples each month. But in recent weeks, imported commodities like cooking oil have been in short supply as a dollar shortage makes it harder for state importers to secure regular supplies. Picture taken February 14, 2016. REUTERS/Mohamed Abd El Ghany 

A man stands near his rickshaw loaded with firewood after buying them from a government depot in Lalitpur, Nepal November 16, 2015. The government started selling firewood to the public from Sunday, as a respite for the ongoing fuel and cooking gas shortages. REUTERS/Navesh Chitrakar 

A man buys firewood at a government depot after the government started selling it to the public from Sunday, as a respite for the ongoing fuel and cooking gas shortages in Lalitpur, Nepal November 16, 2015. The middle hills and the capital Kathmandu have suffered fuel and cooking gas shortages after protesters in the south switched to blocking supplies from India, Nepal's largest trading partner, almost two months ago. REUTERS/Navesh Chitrakar 

Men buy firewood at a government depot after the government started selling it to the public from Sunday, as a respite for the ongoing fuel and cooking gas shortages in Lalitpur, Nepal November 16, 2015. The middle hills and the capital Kathmandu have suffered fuel and cooking gas shortages after protesters in the south switched to blocking supplies from India, Nepal's largest trading partner, almost two months ago. REUTERS/Navesh Chitrakar 

A man buys firewood at a government depot after the government started selling it to the public from Sunday, as a respite for the ongoing fuel and cooking gas shortages in Lalitpur, Nepal November 16, 2015. The middle hills and the capital Kathmandu have suffered fuel and cooking gas shortages after protesters in the south switched to blocking supplies from India, Nepal's largest trading partner, almost two months ago. REUTERS/Navesh Chitrakar 

People queue to buy firewood from a government depot after the government started selling it to the public from Sunday, as a respite for the ongoing fuel and cooking gas shortages in Kathmandu, Nepal November 16, 2015. The middle hills and the capital Kathmandu have suffered fuel and cooking gas shortages after protesters in the south switched to blocking supplies from India, Nepal's largest trading partner, almost two months ago. REUTERS/Navesh Chitrakar

A man buys firewood at a government depot after the government started selling it to the public from Sunday, as a respite for the ongoing fuel and cooking gas shortages in Lalitpur, Nepal November 16, 2015. The middle hills and the capital Kathmandu have suffered fuel and cooking gas shortages after protesters in the south switched to blocking supplies from India, Nepal's largest trading partner, almost two months ago. REUTERS/Navesh Chitrakar 

People queue to buy firewood from a government depot after the government started selling it to the public from Sunday, as a respite for the ongoing fuel and cooking gas shortages in Kathmandu, Nepal November 16, 2015. The middle hills and the capital Kathmandu have suffered fuel and cooking gas shortages after protesters in the south switched to blocking supplies from India, Nepal's largest trading partner, almost two months ago. REUTERS/Navesh Chitrakar

A man buys firewood from a government depot after the government started selling it from Sunday, as a respite for the ongoing fuel and cooking gas shortages in Kathmandu, Nepal November 16, 2015. The middle hills and the capital Kathmandu have suffered fuel and cooking gas shortages after protesters in the south switched to blocking supplies from India, Nepal's largest trading partner, almost two months ago. REUTERS/Navesh Chitrakar

Nepalese youths holding placards take part in a movement demanding the government to act against the ongoing fuel and cooking gas shortages in Kathmandu, Nepal, November 10, 2015. The middle hills and the capital Kathmandu have suffered fuel and cooking gas shortages after protesters in the south switched to blocking supplies from India, Nepal's largest trading partner, almost two months ago. REUTERS/Navesh Chitrakar 

Nepalese youths holding placards take part in a movement demanding the government to act against the ongoing fuel and cooking gas shortages in Kathmandu, Nepal, November 10, 2015. The middle hills and the capital Kathmandu have suffered fuel and cooking gas shortages after protesters in the south switched to blocking supplies from India, Nepal's largest trading partner, almost two months ago. REUTERS/Navesh Chitrakar 

Nepalese youths holding placards take part in the movement demanding the government to act against the ongoing fuel and cooking gas shortages in Kathmandu, Nepal, November 10, 2015. The middle hills and the capital Kathmandu have suffered fuel and cooking gas shortages after protesters in the south switched to blocking supplies from India, Nepal's largest trading partner, almost two months ago. REUTERS/Navesh Chitrakar 

People queue to buy groceries in Caracas, October 20, 2015. Venezuela's proposed 2016 government budget is based on an estimate of $40 per barrel for the OPEC nation's oil exports, Finance Minister Rodolfo Marco said in a presentation to congress on Tuesday. Low oil prices and an increasingly dysfunctional socialist economic model have left Venezuela struggling with chronic product shortages, soaring prices and a contracting economy. REUTERS/Marco Bello 

A butcher cuts meat at the refrigerator of a butchery in Caracas, October 20, 2015. Venezuela's proposed 2016 government budget is based on an estimate of $40 per barrel for the OPEC nation's oil exports, Finance Minister Rodolfo Marco said in a presentation to congress on Tuesday. Low oil prices and an increasingly dysfunctional socialist economic model have left Venezuela struggling with chronic product shortages, soaring prices and a contracting economy. REUTERS/Carlos Garcia Rawlins 

A girl looks at Venezuelan bolivar notes while her mother counts them to pay the cashier at a supermarket checkout line in Caracas, October 20, 2015. Venezuela's proposed 2016 government budget is based on an estimate of $40 per barrel for the OPEC nation's oil exports, Finance Minister Rodolfo Marco said in a presentation to congress on Tuesday. Low oil prices and an increasingly dysfunctional socialist economic model have left Venezuela struggling with chronic product shortages, soaring prices and a contracting economy. REUTERS/Carlos Garcia Rawlins 

People look at the prices of the staple goods in their receipts after buying them at a supermarket in Caracas, October 20, 2015. Venezuela's proposed 2016 government budget is based on an estimate of $40 per barrel for the OPEC nation's oil exports, Finance Minister Rodolfo Marco said in a presentation to congress on Tuesday. Low oil prices and an increasingly dysfunctional socialist economic model have left Venezuela struggling with chronic product shortages, soaring prices and a contracting economy. REUTERS/Carlos Garcia Rawlins 

A woman prepares to pay the cashier at a supermarket checkout line in Caracas, October 20, 2015. Venezuela's proposed 2016 government budget is based on an estimate of $40 per barrel for the OPEC nation's oil exports, Finance Minister Rodolfo Marco said in a presentation to congress on Tuesday. Low oil prices and an increasingly dysfunctional socialist economic model have left Venezuela struggling with chronic product shortages, soaring prices and a contracting economy. REUTERS/Carlos Garcia Rawlins 

People pay to the cashier for their goods at a supermarket checkout line in Caracas October 20, 2015. Venezuela's proposed 2016 government budget is based on an estimate of $40 per barrel for the OPEC nation's oil exports, Finance Minister Rodolfo Marco said in a presentation to congress on Tuesday. Low oil prices and an increasingly dysfunctional socialist economic model have left Venezuela struggling with chronic product shortages, soaring prices and a contracting economy. REUTERS/Carlos Garcia Rawlins 

A cashier counts Venezuelan bolivar notes at a supermarket checkout line in Caracas October 20, 2015. Venezuela's proposed 2016 government budget is based on an estimate of $40 per barrel for the OPEC nation's oil exports, Finance Minister Rodolfo Marco said in a presentation to congress on Tuesday. Low oil prices and an increasingly dysfunctional socialist economic model have left Venezuela struggling with chronic product shortages, soaring prices and a contracting economy. REUTERS/Carlos Garcia Rawlins 

A worker works with vegetables in a supermarket in Caracas October 20, 2015. Venezuela's proposed 2016 government budget is based on an estimate of $40 per barrel for the OPEC nation's oil exports, Finance Minister Rodolfo Marco said in a presentation to congress on Tuesday. Low oil prices and an increasingly dysfunctional socialist economic model have left Venezuela struggling with chronic product shortages, soaring prices and a contracting economy. REUTERS/Carlos Garcia Rawlins 

A worker pushes a wheelbarrow loaded with cooking oil bottles at a supermarket in Caracas October 20, 2015. Venezuela's proposed 2016 government budget is based on an estimate of $40 per barrel for the OPEC nation's oil exports, Finance Minister Rodolfo Marco said in a presentation to congress on Tuesday. Low oil prices and an increasingly dysfunctional socialist economic model have left Venezuela struggling with chronic product shortages, soaring prices and a contracting economy. REUTERS/Carlos Garcia Rawlins 

People look at their goods after buying them, outside a supermarket in Caracas October 20, 2015. Venezuela's proposed 2016 government budget is based on an estimate of $40 per barrel for the OPEC nation's oil exports, Finance Minister Rodolfo Marco said in a presentation to congress on Tuesday. Low oil prices and an increasingly dysfunctional socialist economic model have left Venezuela struggling with chronic product shortages, soaring prices and a contracting economy. REUTERS/Carlos Garcia Rawlins 

William Garcia, 59 years old, is seen at his improvised store where he sells used items at a main street in Caracas October 20, 2015. Venezuela's proposed 2016 government budget is based on an estimate of $40 per barrel for the OPEC nation's oil exports, Finance Minister Rodolfo Marco said in a presentation to congress on Tuesday. Low oil prices and an increasingly dysfunctional socialist economic model have left Venezuela struggling with chronic product shortages, soaring prices and a contracting economy. REUTERS/Marco Bello 

People wait in a line to buy staple goods outside a supermarket in Caracas October 20, 2015. Venezuela's proposed 2016 government budget is based on an estimate of $40 per barrel for the OPEC nation's oil exports, Finance Minister Rodolfo Marco said in a presentation to congress on Tuesday. Low oil prices and an increasingly dysfunctional socialist economic model have left Venezuela struggling with chronic product shortages, soaring prices and a contracting economy. REUTERS/Carlos Garcia Rawlins 

Mothers take care of their children while queuing to buy staple goods outside a supermarket in Caracas October 20, 2015. Venezuela's proposed 2016 government budget is based on an estimate of $40 per barrel for the OPEC nation's oil exports, Finance Minister Rodolfo Marco said in a presentation to congress on Tuesday. Low oil prices and an increasingly dysfunctional socialist economic model have left Venezuela struggling with chronic product shortages, soaring prices and a contracting economy. REUTERS/Carlos Garcia Rawlins 

A cashier counts Venezuelan bolivar notes at a supermarket checkout line in Caracas October 20, 2015. Venezuela's proposed 2016 government budget is based on an estimate of $40 per barrel for the OPEC nation's oil exports, Finance Minister Rodolfo Marco said in a presentation to congress on Tuesday. Low oil prices and an increasingly dysfunctional socialist economic model have left Venezuela struggling with chronic product shortages, soaring prices and a contracting economy. REUTERS/Carlos Garcia Rawlins 

Home-cleaning products with handwritten signs displaying the current prices are displayed at a grocery store in Caracas October 20, 2015. Venezuela's proposed 2016 government budget is based on an estimate of $40 per barrel for the OPEC nation's oil exports, Finance Minister Rodolfo Marco said in a presentation to congress on Tuesday. Low oil prices and an increasingly dysfunctional socialist economic model have left Venezuela struggling with chronic product shortages, soaring prices and a contracting economy. REUTERS/Marco Bello 

People walk past an old banner with an image of Venezuela's President Nicolas Maduro in Caracas August 13, 2015. Venezuelan President Nicolas Maduro's popularity fell to 24.3 percent in July, hurt by voracious inflation and shortages of goods ranging from spare parts to shampoo, according to respected local pollster Datanalisis. The oil-producing country is suffering from a brutal recession stemming in part from strict controls that crimp access to hard currency and imports, and aggravated by the tumble in crude prices. REUTERS/Carlos Garcia Rawlins 

Posters of Venezuela's President Nicolas Maduro (bottom) and late President Hugo Chavez are seen at the window of a building in Caracas August 13, 2015. Venezuelan President Nicolas Maduro's popularity fell to 24.3 percent in July, hurt by voracious inflation and shortages of goods ranging from spare parts to shampoo, according to respected local pollster Datanalisis. The oil-producing country is suffering from a brutal recession stemming in part from strict controls that crimp access to hard currency and imports, and aggravated by the tumble in crude prices. REUTERS/Carlos Garcia Rawlins 

An Iraqi protester takes part during a demonstration against power cuts and water shortages in Basra province, Iraq, August 1, 2015. Hundreds of residents of Iraq's southern oil-city of Basra demonstrated on Saturday over frequent electricity cuts and poor quality of water, demanding better services from the government. More than 600 people waved banners as they protested in front of the governor's office to demand a solution to the long-running problems of extended power cuts and salty tap water. REUTERS/Essam Al-Sudani 

Iraqis shout slogans during a demonstration against power cuts and water shortages in Basra province, Iraq, August 1, 2015. Hundreds of residents of Iraq's southern oil-city of Basra demonstrated on Saturday over frequent electricity cuts and poor quality of water, demanding better services from the government. More than 600 people waved banners as they protested in front of the governor's office to demand a solution to the long-running problems of extended power cuts and salty tap water. REUTERS/Essam Al-Sudani 

Iraqis shout slogans during a demonstration against power cuts and water shortages in Basra province, Iraq, August 1, 2015. Hundreds of residents of Iraq's southern oil-city of Basra demonstrated on Saturday over frequent electricity cuts and poor quality of water, demanding better services from the government. More than 600 people waved banners as they protested in front of the governor's office to demand a solution to the long-running problems of extended power cuts and salty tap water. REUTERS/Essam Al-Sudani 

An Iraqi protester takes part during a demonstration against power cuts and water shortages in Basra province, Iraq, August 1, 2015. Hundreds of residents of Iraq's southern oil-city of Basra demonstrated on Saturday over frequent electricity cuts and poor quality of water, demanding better services from the government. More than 600 people waved banners as they protested in front of the governor's office to demand a solution to the long-running problems of extended power cuts and salty tap water. REUTERS/Essam Al-Sudani 

Iraqis shout slogans during a demonstration against power cuts and water shortages in Basra province, Iraq, August 1, 2015. Hundreds of residents of Iraq's southern oil-city of Basra demonstrated on Saturday over frequent electricity cuts and poor quality of water, demanding better services from the government. More than 600 people waved banners as they protested in front of the governor's office to demand a solution to the long-running problems of extended power cuts and salty tap water. REUTERS/Essam Al-Sudani 

People ride atop a car on a road linking Yemen's capital Sanaa with the northwestern city of Amran July 27, 2015. Fuel shortages in Yemen have caused hikes in taxi fees, forcing many to ride on overcrowded vehicles. REUTERS/Khaled Abdullah 

People ride on the back of a truck on a road linking Yemen's capital Sanaa with the northwestern city of Amran July 27, 2015. Fuel shortages in Yemen have caused hikes in taxi fees, forcing many to ride in overcrowded vehicles. REUTERS/Khaled Abdullah TPX IMAGES OF THE DAY 

A worker with an AK-47 rifle stops the sale of petrol at a petrol station amid the fuel supply shortage in Yemen's capital Sanaa July 26, 2015. REUTERS/Mohamed al-Sayaghi 

A man sells black market fuel amid an acute shortage of fuel in Sanaa, Yemen, July 1, 2015. Yemen is running critically short of imported food and fuel as war has cut internal supply lines and a near-blockade by Saudi-led naval forces has held up shipping to the country, the Arab world's poorest even before fighting erupted. Picture taken July 1, 2015. REUTERS/Mohamed al-Sayaghi 

A man walks in front of an advertisement billboard of MTN phone company in Abuja, Nigeria May 25, 2015. Chronic fuel shortages in Nigeria brought phone firms, banks and flights to a standstill on Monday, just four days before Muhammadu Buhari's inauguration as president of Africa's biggest economy and top oil exporter. Besides airlines, which could not obtain aviation fuel, phone companies such MTN and domestic banks ground to a halt because the private generators that produce most of Nigeria's electricity ran out of fuel. REUTERS/Afolabi Sotunde 

Passengers board a bus at a bus stop, as fuel scarcities persist in Abuja, Nigeria May 25, 2015. Chronic fuel shortages in Nigeria brought phone firms, banks and flights to a standstill on Monday, just four days before Muhammadu Buhari's inauguration as president of Africa's biggest economy and top oil exporter. REUTERS/Afolabi Sotunde 

People wait at a bus stop, as fuel scarcities persist in Abuja, Nigeria May 25, 2015. Chronic fuel shortages in Nigeria brought phone firms, banks and flights to a standstill on Monday, just four days before Muhammadu Buhari's inauguration as president of Africa's biggest economy and top oil exporter. REUTERS/Afolabi Sotunde 

A woman carrying a baby argues with a man outside a petrol station of state-owned energy company Nigerian National Petroleum Corporation (NNPC) in Abuja, Nigeria May 25, 2015. Chronic fuel shortages in Nigeria brought phone firms, banks and flights to a standstill on Monday, just four days before Muhammadu Buhari's inauguration as president of Africa's biggest economy and top oil exporter. REUTERS/Afolabi Sotunde 

Men who work as tyre vulcanizers carry a piece of equipment across a road packed with vehicles waiting outside a petrol station of state-owned energy company Nigerian National Petroleum Corporation (NNPC) in Abuja, Nigeria May 25, 2015. Chronic fuel shortages in Nigeria brought phone firms, banks and flights to a standstill on Monday, just four days before Muhammadu Buhari's inauguration as president of Africa's biggest economy and top oil exporter. REUTERS/Afolabi Sotunde