Colonel Tom Byabagamba meets his lawyer Valery Gakunzi as he arrives at the court to appeal his 2016 conviction on charges of tarnishing Rwanda's image and inciting insurrection, in Kigali, Rwanda December 27, 2019. REUTERS/Clement Uwiringiyimana

Colonel Tom Byabagamba arrives at the court to appeal for his 2016 conviction on charges of tarnishing Rwanda's image and inciting insurrection, in Kigali, Rwanda December 27, 2019. REUTERS/Clement Uwiringiyimana

Colonel Tom Byabagamba arrives at the court to appeal for his 2016 conviction on charges of tarnishing Rwanda's image and inciting insurrection, in Kigali, Rwanda December 27, 2019. REUTERS/Clement Uwiringiyimana

Retired General Frank Rusagara arrives at the court to appeal for his 2016 conviction on charges of tarnishing Rwanda's image and inciting insurrection, in Kigali, Rwanda December 27, 2019. REUTERS/Clement Uwiringiyimana

Retired General Frank Rusagara arrives at the court to appeal for his 2016 conviction on charges of tarnishing Rwanda's image and inciting insurrection, in Kigali, Rwanda December 27, 2019. REUTERS/Clement Uwiringiyimana

An umbrella lies on the ground surrounded by the mist of tear gas during a demonstration, near government headquarters in Hong Kong, China September 29, 2019. REUTERS/Tyrone Siu

An umbrella lies down as anti-government protesters demonstrate in Admiralty district, Hong Kong, China, September 29, 2019. REUTERS/Susana Vera TPX IMAGES OF THE DAY

A tear gas shell fired by Indian police explodes during a protest march in Srinagar December 17, 2018. REUTERS/Danish Ismail TPX IMAGES OF THE DAY

A tear gas shell fired by Indian police explodes during a protest march in Srinagar December 17, 2018. REUTERS/Danish Ismail

Athens' Polytechnic school students carry a blood-stained Greek flag during a rally marking the 45th anniversary of a 1973 student uprising against the military dictatorship that was ruling Greece, in Athens, Greece, November 17, 2018. REUTERS/Costas Baltas TPX IMAGES OF THE DAY

A rebel fighter gestures as he sits inside a bus during evacuation, at Beit Sahm in Damascus, Syria, May 5, 2018. REUTERS/Omar Sanadiki

Boko Haram et son groupe dissident Etat islamique en Afrique de l’Ouest (ISWA) exercent une influence sur une large partie du nord-est du Nigéria alors que le contrôle gouvernemental est sévèrement affaibli.

Carte présentant la gravité de l'insécurité alimentaire et de l'inaccessibilité du nord-est du Nigéria dues à l'insurrection du groupe islamiste Boko Haram

Damaged houses are pictured at night in the rebel-held area, in the city of Daraa, Syria February 18, 2018. Picture taken February 18, 2018. Picture taken using long exposure. REUTERS/Alaa Al-Faqir TPX IMAGES OF THE DAY

Smoke rises after strikes on rebel-held Deraa city, Syria February 13, 2017. REUTERS/Alaa Al-Faqir

Smoke rises after strikes on rebel-held Deraa city, Syria February 13, 2017. REUTERS/Alaa Al-Faqir

Clothes hang near stacked sandbags in the rebel held besieged city of Douma, in the eastern Damascus suburb of Ghouta, Syria February 12, 2017. REUTERS/Bassam Khabieh

Cambodia's opposition National Rescue Party (CNRP) supporter Roeun Chetra arrives to the court to hear a verdict over insurrection charges against him and two more opposition supporters in Phnom Penh, Cambodia June 13, 2016. REUTERS/Samrang Pring

Cambodia's opposition National Rescue Party (CNRP) supporter Yon Kimhour arrives to the court to hear a verdict over insurrection charges against him and two more opposition supporters in Phnom Penh, Cambodia June 13, 2016. REUTERS/Samrang Pring

Cambodia's opposition National Rescue Party (CNRP) supporter Ya Thong arrives to the court to hear a verdict over insurrection charges against him and two more opposition supporters in Phnom Penh, Cambodia June 13, 2016. REUTERS/Samrang Pring

Mozambican soldiers join exercises as part of the African Union's African Standby Force (ASF) at the South Africa National Defence Force's Lohatla training area October 27, 2015. Backed by tanks, armoured vehicles and plenty of EU cash, thousands of African soldiers took on an imaginary enemy in the arid heart of South Africa this week, the last joint exercises before a homegrown continental strike force goes live. Standing on far-away hilltops, commanders peered through night vision goggles and issued orders through helmet-mounted radios to the 5,400 troops simulating a dawn assault on rebels in the fictitious city of Kalasi marked out in the bush. The orderly manoeuvres and high-tech kit elicited purrs of approval from military chiefs who tout the rapid-reaction battalion - a key part of a long-awaited African Standby Force (ASF) - as the antidote to insurrections spiralling into civil war or even genocide. Picture taken October 27, 2015. REUTERS/Mike Hutchings

Soldiers from 22 African nations join exercises as part of the African Union's African Standby Force (ASF) at the South Africa National Defence Force's Lohatla training area October 27, 2015. Backed by tanks, armoured vehicles and plenty of EU cash, thousands of African soldiers took on an imaginary enemy in the arid heart of South Africa this week, the last joint exercises before a homegrown continental strike force goes live. Standing on far-away hilltops, commanders peered through night vision goggles and issued orders through helmet-mounted radios to the 5,400 troops simulating a dawn assault on rebels in the fictitious city of Kalasi marked out in the bush. The orderly manoeuvres and high-tech kit elicited purrs of approval from military chiefs who tout the rapid-reaction battalion - a key part of a long-awaited African Standby Force (ASF) - as the antidote to insurrections spiralling into civil war or even genocide. Picture taken October 27, 2015. REUTERS/Mike Hutchings

Mozambican soldiers join exercises as part of the African Union's African Standby Force (ASF) at the South Africa National Defence Force's Lohatla training area October 27, 2015. Backed by tanks, armoured vehicles and plenty of EU cash, thousands of African soldiers took on an imaginary enemy in the arid heart of South Africa this week, the last joint exercises before a homegrown continental strike force goes live. Standing on far-away hilltops, commanders peered through night vision goggles and issued orders through helmet-mounted radios to the 5,400 troops simulating a dawn assault on rebels in the fictitious city of Kalasi marked out in the bush. The orderly manoeuvres and high-tech kit elicited purrs of approval from military chiefs who tout the rapid-reaction battalion - a key part of a long-awaited African Standby Force (ASF) - as the antidote to insurrections spiralling into civil war or even genocide. Picture taken October 27, 2015. REUTERS/Mike Hutchings

Soldiers from 22 African nations join exercises as part of the African Union's African Standby Force (ASF) at the South Africa National Defence Force's Lohatla training area October 28, 2015. Backed by tanks, armoured vehicles and plenty of EU cash, thousands of African soldiers took on an imaginary enemy in the arid heart of South Africa this week, the last joint exercises before a homegrown continental strike force goes live. Standing on far-away hilltops, commanders peered through night vision goggles and issued orders through helmet-mounted radios to the 5,400 troops simulating a dawn assault on rebels in the fictitious city of Kalasi marked out in the bush. The orderly manoeuvres and high-tech kit elicited purrs of approval from military chiefs who tout the rapid-reaction battalion - a key part of a long-awaited African Standby Force (ASF) - as the antidote to insurrections spiralling into civil war or even genocide. Picture taken October 28, 2015. REUTERS/Mike Hutchings

A Mozambican soldier takes part in exercises as part of the African Union's African Standby Force (ASF) at the South Africa National Defence Force's Lohatla training area October 27, 2015. Backed by tanks, armoured vehicles and plenty of EU cash, thousands of African soldiers took on an imaginary enemy in the arid heart of South Africa this week, the last joint exercises before a homegrown continental strike force goes live. Standing on far-away hilltops, commanders peered through night vision goggles and issued orders through helmet-mounted radios to the 5,400 troops simulating a dawn assault on rebels in the fictitious city of Kalasi marked out in the bush. The orderly manoeuvres and high-tech kit elicited purrs of approval from military chiefs who tout the rapid-reaction battalion - a key part of a long-awaited African Standby Force (ASF) - as the antidote to insurrections spiralling into civil war or even genocide. Picture taken October 27, 2015. REUTERS/Mike Hutchings

Mozambican soldiers join exercises as part of the African Union's African Standby Force (ASF) at the South Africa National Defence Force's Lohatla training area October 27, 2015. Backed by tanks, armoured vehicles and plenty of EU cash, thousands of African soldiers took on an imaginary enemy in the arid heart of South Africa this week, the last joint exercises before a homegrown continental strike force goes live. Standing on far-away hilltops, commanders peered through night vision goggles and issued orders through helmet-mounted radios to the 5,400 troops simulating a dawn assault on rebels in the fictitious city of Kalasi marked out in the bush. The orderly manoeuvres and high-tech kit elicited purrs of approval from military chiefs who tout the rapid-reaction battalion - a key part of a long-awaited African Standby Force (ASF) - as the antidote to insurrections spiralling into civil war or even genocide. Picture taken October 27, 2015. REUTERS/Mike Hutchings

Soldiers from 22 African nations join exercises as part of the African Union's African Standby Force (ASF) at the South Africa National Defence Force's Lohatla training area October 28, 2015. Backed by tanks, armoured vehicles and plenty of EU cash, thousands of African soldiers took on an imaginary enemy in the arid heart of South Africa this week, the last joint exercises before a homegrown continental strike force goes live. Standing on far-away hilltops, commanders peered through night vision goggles and issued orders through helmet-mounted radios to the 5,400 troops simulating a dawn assault on rebels in the fictitious city of Kalasi marked out in the bush. The orderly manoeuvres and high-tech kit elicited purrs of approval from military chiefs who tout the rapid-reaction battalion - a key part of a long-awaited African Standby Force (ASF) - as the antidote to insurrections spiralling into civil war or even genocide. Picture taken October 28, 2015. REUTERS/Mike Hutchings

A Mozambican soldier takes part in exercises as part of the African Union's African Standby Force (ASF) at the South Africa National Defence Force's Lohatla training area October 27, 2015. Backed by tanks, armoured vehicles and plenty of EU cash, thousands of African soldiers took on an imaginary enemy in the arid heart of South Africa this week, the last joint exercises before a homegrown continental strike force goes live. Standing on far-away hilltops, commanders peered through night vision goggles and issued orders through helmet-mounted radios to the 5,400 troops simulating a dawn assault on rebels in the fictitious city of Kalasi marked out in the bush. The orderly manoeuvres and high-tech kit elicited purrs of approval from military chiefs who tout the rapid-reaction battalion - a key part of a long-awaited African Standby Force (ASF) - as the antidote to insurrections spiralling into civil war or even genocide. Picture taken October 27, 2015. REUTERS/Mike Hutchings

Soldiers from 22 African nations join exercises as part of the African Union's African Standby Force (ASF) at the South Africa National Defence Force's Lohatla training area October 28, 2015. Backed by tanks, armoured vehicles and plenty of EU cash, thousands of African soldiers took on an imaginary enemy in the arid heart of South Africa this week, the last joint exercises before a homegrown continental strike force goes live. Standing on far-away hilltops, commanders peered through night vision goggles and issued orders through helmet-mounted radios to the 5,400 troops simulating a dawn assault on rebels in the fictitious city of Kalasi marked out in the bush. The orderly manoeuvres and high-tech kit elicited purrs of approval from military chiefs who tout the rapid-reaction battalion - a key part of a long-awaited African Standby Force (ASF) - as the antidote to insurrections spiralling into civil war or even genocide. Picture taken October 28, 2015. REUTERS/Mike Hutchings

Soldiers from 22 African nations join exercises as part of the African Union's African Standby Force (ASF) at the South Africa National Defence Force's Lohatla training area October 28, 2015. Backed by tanks, armoured vehicles and plenty of EU cash, thousands of African soldiers took on an imaginary enemy in the arid heart of South Africa this week, the last joint exercises before a homegrown continental strike force goes live. Standing on far-away hilltops, commanders peered through night vision goggles and issued orders through helmet-mounted radios to the 5,400 troops simulating a dawn assault on rebels in the fictitious city of Kalasi marked out in the bush. The orderly manoeuvres and high-tech kit elicited purrs of approval from military chiefs who tout the rapid-reaction battalion - a key part of a long-awaited African Standby Force (ASF) - as the antidote to insurrections spiralling into civil war or even genocide. Picture taken October 28, 2015. REUTERS/Mike Hutchings

A Mozambican soldier joins exercises as part of the African Union's African Standby Force (ASF) at the South Africa National Defence Force's Lohatla training area October 27, 2015. Backed by tanks, armoured vehicles and plenty of EU cash, thousands of African soldiers took on an imaginary enemy in the arid heart of South Africa this week, the last joint exercises before a homegrown continental strike force goes live. Standing on far-away hilltops, commanders peered through night vision goggles and issued orders through helmet-mounted radios to the 5,400 troops simulating a dawn assault on rebels in the fictitious city of Kalasi marked out in the bush. The orderly manoeuvres and high-tech kit elicited purrs of approval from military chiefs who tout the rapid-reaction battalion - a key part of a long-awaited African Standby Force (ASF) - as the antidote to insurrections spiralling into civil war or even genocide. Picture taken October 27, 2015. REUTERS/Mike Hutchings

Soldiers from 22 African nations join exercises as part of the African Union's African Standby Force (ASF) at the South Africa National Defence Force's Lohatla training area October 27, 2015. Backed by tanks, armoured vehicles and plenty of EU cash, thousands of African soldiers took on an imaginary enemy in the arid heart of South Africa this week, the last joint exercises before a homegrown continental strike force goes live. Standing on far-away hilltops, commanders peered through night vision goggles and issued orders through helmet-mounted radios to the 5,400 troops simulating a dawn assault on rebels in the fictitious city of Kalasi marked out in the bush. The orderly manoeuvres and high-tech kit elicited purrs of approval from military chiefs who tout the rapid-reaction battalion - a key part of a long-awaited African Standby Force (ASF) - as the antidote to insurrections spiralling into civil war or even genocide. Picture taken October 27, 2015. REUTERS/Mike Hutchings

Soldiers from 22 African nations join exercises as part of the African Union's African Standby Force (ASF) at the South Africa National Defence Force's Lohatla training area October 27, 2015. Backed by tanks, armoured vehicles and plenty of EU cash, thousands of African soldiers took on an imaginary enemy in the arid heart of South Africa this week, the last joint exercises before a homegrown continental strike force goes live. Standing on far-away hilltops, commanders peered through night vision goggles and issued orders through helmet-mounted radios to the 5,400 troops simulating a dawn assault on rebels in the fictitious city of Kalasi marked out in the bush. The orderly manoeuvres and high-tech kit elicited purrs of approval from military chiefs who tout the rapid-reaction battalion - a key part of a long-awaited African Standby Force (ASF) - as the antidote to insurrections spiralling into civil war or even genocide. Picture taken October 27, 2015. REUTERS/Mike Hutchings

Pro-democracy protesters carrying yellow umbrellas, symbol of the Occupy Central civil disobedience movement, gather on the stairs outside government headquarters in Hong Kong, China September 28, 2015. Monday marks the first anniversary of the Occupy Central or "umbrella" movement, demanding universal suffrage in the territory. REUTERS/Bobby Yip

More than one thousand pro-democracy protesters gather outside government headquarters in Hong Kong, China September 28, 2015. Monday marks the first anniversary of the Occupy Central or "umbrella" movement, demanding universal suffrage in the territory. REUTERS/Bobby Yip TPX IMAGES OF THE DAY

A combination of six pictures shows the rising supermoon in the sky in Frankfurt, Germany, early morning September 28, 2015. Sky-watchers around the world were treated when the shadow of Earth cast a reddish glow on the moon, the result of rare combination of an eclipse with the closest full moon of the year. The total "supermoon" lunar eclipse, also known as a "blood moon" is one that appears bigger and brighter than usual as it reaches the point in its orbit that is closest to Earth. REUTERS/Kai Pfaffenbach TPX IMAGES OF THE DAY

A woman pushes a trolley as she walks past graffiti painted by pro-Houthi activists on the wall of the Saudi embassy in Yemen's capital Sanaa August 18, 2015. A civil war in Yemen erupted in late March when the Iran-allied Houthis, who had seized the capital Sanaa last September, drove southwards, forcing the government to flee into exile in Saudi Arabia and triggering a Gulf military intervention. REUTERS/Khaled Abdullah

A woman walks past graffiti painted by pro-Houthi activists on the wall of the Saudi embassy in Yemen's capital Sanaa August 18, 2015. A civil war in Yemen erupted in late March when the Iran-allied Houthis, who had seized the capital Sanaa last September, drove southwards, forcing the government to flee into exile in Saudi Arabia and triggering a Gulf military intervention. REUTERS/Khaled Abdullah

Women walk past graffiti painted by pro-Houthi activists on the wall of the Saudi embassy in Yemen's capital Sanaa August 18, 2015. A civil war in Yemen erupted in late March when the Iran-allied Houthis, who had seized the capital Sanaa last September, drove southwards, forcing the government to flee into exile in Saudi Arabia and triggering a Gulf military intervention. The writing reads, "We will not bow down but to Allah." REUTERS/Khaled Abdullah

A British military instructor (L) and a Ukrainian army officer walk as they inspect a military drill at a shooting range near Zhytomyr, Ukraine, August 11, 2015. REUTERS/Valentyn Ogirenko

Britain's Defence Secretary Michael Fallon (front L) listens to a Ukrainian officer during his visit to a military shooting range near Zhytomyr, Ukraine, August 11, 2015. REUTERS/Valentyn Ogirenko

Ukrainian servicemen take part in a military drill at a shooting range near Zhytomyr, Ukraine, August 11, 2015. REUTERS/Valentyn Ogirenko

Ukrainian servicemen take part in a military drill at a shooting range near Zhytomyr, Ukraine, August 11, 2015. REUTERS/Valentyn Ogirenko

Ukrainian servicemen sit onboard an armored personnel carrier after a military drill at a shooting range near Zhytomyr, Ukraine, August 11, 2015. REUTERS/Valentyn Ogirenko

A British military instructor (L) inspects Ukrainian servicemen during a military drill at a shooting range near Zhytomyr, Ukraine, August 11, 2015. REUTERS/Valentyn Ogirenko

Ukrainian servicemen take part in a military drill at a shooting range near Zhytomyr, Ukraine, August 11, 2015. REUTERS/Valentyn Ogirenko

A British military instructor (L) inspects Ukrainian servicemen during a military drill at a shooting range near Zhytomyr, Ukraine, August 11, 2015. REUTERS/Valentyn Ogirenko

Ukrainian servicemen take part in a military drill at a shooting range near Zhytomyr, Ukraine, Ukraine, August 11, 2015. REUTERS/Valentyn Ogirenko

Britain's Defence Secretary Michael Fallon (front L) listens to British military instructors during his visit to a military shooting range near Zhytomyr, Ukraine, August 11, 2015. REUTERS/Valentyn Ogirenko

Britain's Defence Secretary Michael Fallon (2nd R) listens to Ukrainian servicemen during his visit to a military shooting range near Zhytomyr, Ukraine, August 11, 2015. REUTERS/Valentyn Ogirenko

Britain's Defence Secretary Michael Fallon (R) speaks with a British military instructor during his visit to a military shooting range near Zhytomyr, Ukraine, August 11, 2015. REUTERS/Valentyn Ogirenko

Ukraine's Defence Minister Stepan Poltorak (R) talks to Britain's Defence Secretary Michael Fallon during a meeting in Kiev, Ukraine, August 11, 2015. REUTERS/Valentyn Ogirenko

Ukraine's Defence Minister Stepan Poltorak (R) talks to Britain's Defence Secretary Michael Fallon during a meeting in Kiev, Ukraine, August 11, 2015. REUTERS/Valentyn Ogirenko

Peter Maurer, president of the International Committee of the Red Cross, tours a site which the Houthi-led authorities say was hit by a Saudi-led air strike at the old quarter of Yemen's capital Sanaa August 9, 2015. The Saudi-led coalition denies that an air-strike last month destroyed four houses at the site. REUTERS/Khaled Abdullah

A man sits at a site which the Houthi-led authorities say was hit by a Saudi-led air strike at the old quarter of Yemen's capital Sanaa August 9, 2015. The Saudi-led coalition denies that an air-strike last month destroyed four houses at the site. REUTERS/Khaled Abdullah

People gather at a site which the Houthi-led authorities say was hit by a Saudi-led air strike at the old quarter of Yemen's capital Sanaa August 9, 2015. The Saudi-led coalition denies that an air-strike last month destroyed four houses at the site. REUTERS/Khaled Abdullah

People gather at a site which the Houthi-led authorities say was hit by a Saudi-led air strike at the old quarter of Yemen's capital Sanaa August 9, 2015. The Saudi-led coalition denies that an air-strike last month destroyed four houses at the site. REUTERS/Khaled Abdullah