A pharmacist holds the anti-parasite drug ivermectin for sale to the public with a medical prescription as Bolivia's Ministry of Health said it can be used under proper medical protocol, while noting the lack of evidence for it as a treatment for the coronavirus disease (COVID-19) in Santa Cruz, Bolivia May 19, 2020. REUTERS/Rodrigo Urzagasti

Manuel Negrete holds the anti-parasite drug ivermectin after buying it with a medical prescription at a local pharmacy in Santa Cruz, Bolivia May 19, 2020. Negrete said he bought it in case of contracting the coronavirus disease (COVID-19), after Bolivia's Ministry of Health said it can be used under proper medical protocol, while noting the lack of evidence for it as a treatment for the coronavirus disease (COVID-19). REUTERS/Rodrigo Urzagasti

The words of Avigan, an anti-flu drug that is being tested as a treatment for COVID-19 patients, are seen on a board displaying the treatment record at the Intensive Care Unit (ICU) ward for coronavirus disease (COVID-19) patients at St. Marianna Medical University Hospital in Kawasaki, south of Tokyo, Japan May 4, 2020. Picture taken May 4, 2020. REUTERS/Issei Kato

The words of Avigan, an anti-flu drug that is being tested as a treatment for COVID-19 patients, are seen on a board displaying the treatment record at the Intensive Care Unit (ICU) ward for coronavirus disease (COVID-19) patients at St. Marianna Medical University Hospital in Kawasaki, south of Tokyo, Japan May 4, 2020. REUTERS/Issei Kato

Colombian anti-drug policemen and a dog stand guard at a coca plantation in Tumaco, Colombia February 26, 2020. Picture taken February 26, 2020. REUTERS/Luisa Gonzalez

A Colombian anti-drug policeman and a dog stand guard at a coca plantation in Tumaco, Colombia February 26, 2020. Picture taken February 26, 2020. REUTERS/Luisa Gonzalez

Colombian anti-drug policemen stands guard at a coca plantation in Tumaco, Colombia February 26, 2020. Picture taken February 26, 2020. REUTERS/Luisa Gonzalez

Anti-drugs policemen are seen at their base camp after eradicating coca leaf plantations in Tumaco, Colombia February 26, 2020. Picture taken February 26, 2020. REUTERS/Luisa Gonzalez

A anti-drugs policeman is seen at his base camp after eradicating coca leaf plantations in Tumaco, Colombia February 26, 2020. Picture taken February 26, 2020. REUTERS/Luisa Gonzalez

Signs are posted on the door of a drug store indicating that it has run out of face masks and anti-bacterial gels, in Bangkok, Thailand February 13, 2020. Picture taken February 13, 2020. REUTERS/Jorge Silva

A soldier from the Punjab anti-narcotics force stands guard during a drug destruction ceremony in Lahore, Pakistan December 11, 2019. REUTERS/Mohsin Raza

A soldier from Pakistan's Anti-Narcotics Force (ANF) walks next to a pile of confiscated drugs which was set on fire during a drug burning ceremony in Peshawar, Pakistan, November 14, 2019. REUTERS/Fayaz Aziz

Brazilian Levi Adriani Felicio, accused of supplying drugs and weapons to criminal organisations in Brazil, is escorted by a soldier and a member of Paraguay's National Anti-Drug Secretariat (SENAD) after his detention, in Asuncion, Paraguay October 15, 2019. REUTERS/Jorge Adorno

Brazilian Levi Adriani Felicio, accused of supplying drugs and weapons to criminal organisations in Brazil, is escorted by a member of Paraguay's National Anti-Drug Secretariat (SENAD) after his detention, in Asuncion, Paraguay October 15, 2019. REUTERS/Jorge Adorno

Brazilian Levi Adriani Felicio, accused of supplying drugs and weapons to criminal organisations in Brazil, is escorted by a member of Paraguay's National Anti-Drug Secretariat (SENAD) after his detention, in Asuncion, Paraguay October 15, 2019. REUTERS/Jorge Adorno

Brazilian Levi Adriani Felicio, accused of supplying drugs and weapons to criminal organisations in Brazil, is escorted by a soldier and a member of Paraguay's National Anti-Drug Secretariat (SENAD) after his detention, in Asuncion, Paraguay October 15, 2019. REUTERS/Jorge Adorno

A juice pack is left on top of Amelia Faustino's casket, who was shot and killed last week by an unknown gunman, in Navotas in Manila, Philippines, July 12, 2019. Faustino, who her family said was released from prison last year after being convicted of drug offences, is among thousands of suspected users or dealers and people previously linked to drugs killed in mysterious circumstances since President Rodrigo Duterte launched his anti-narcotics crackdown in 2016. REUTERS/Eloisa Lopez

Daughters of Amelia Faustino, who was shot and killed last week by an unknown gunman, sit beside her casket in Navotas in Manila, Philippines, July 12, 2019. Faustino, who her family said was released from prison last year after being convicted of drug offences, is among thousands of suspected users or dealers and people previously linked to drugs killed in mysterious circumstances since President Rodrigo Duterte launched his anti-narcotics crackdown in 2016. REUTERS/Eloisa Lopez

Bags of heroin seized during a special operation are seen at a news conference in Kiev, Ukraine April 24, 2019. REUTERS/Gleb Garanich

Bags of heroin seized during a special operation are seen at a news conference in Kiev, Ukraine April 24, 2019. REUTERS/Gleb Garanich

Ukraine's President and presidential candidate Petro Poroshenko speaks after a drugs and alcohol test, which is a precondition to participate in a policy debate ahead of the second round of a presidential election, conducted by the Voluntary Anti-Doping Association (VADA) at NSC Olimpiyskiy Stadium in Kiev, Ukraine April 10, 2019. REUTERS/Valentyn Ogirenko

Ukraine's President and presidential candidate Petro Poroshenko speaks after a drugs and alcohol test, which is a precondition to participate in a policy debate ahead of the second round of a presidential election, conducted by the Voluntary Anti-Doping Association (VADA) at NSC Olimpiyskiy Stadium in Kiev, Ukraine April 10, 2019. REUTERS/Valentyn Ogirenko

Ukraine's President and presidential candidate Petro Poroshenko walks after a drugs and alcohol test, which is a precondition to participate in a policy debate ahead of the second round of a presidential election, conducted by the Voluntary Anti-Doping Association (VADA) at NSC Olimpiyskiy Stadium in Kiev, Ukraine April 10, 2019. REUTERS/Valentyn Ogirenko

Ukraine's President and presidential candidate Petro Poroshenko speaks after a drugs and alcohol test, which is a precondition to participate in a policy debate ahead of the second round of a presidential election, conducted by the Voluntary Anti-Doping Association (VADA) at NSC Olimpiyskiy Stadium in Kiev, Ukraine April 10, 2019. REUTERS/Valentyn Ogirenko

Ukraine's President and presidential candidate Petro Poroshenko reacts after a drugs and alcohol test, which is a precondition to participate in a policy debate ahead of the second round of a presidential election, conducted by the Voluntary Anti-Doping Association (VADA) at NSC Olimpiyskiy Stadium in Kiev, Ukraine April 10, 2019. REUTERS/Valentyn Ogirenko

Ukraine's President and presidential candidate Petro Poroshenko speaks after a drugs and alcohol test, which is a precondition to participate in a policy debate ahead of the second round of a presidential election, conducted by the Voluntary Anti-Doping Association (VADA) at NSC Olimpiyskiy Stadium in Kiev, Ukraine April 10, 2019. REUTERS/Valentyn Ogirenko

Ukraine's President and presidential candidate Petro Poroshenko walks before a drugs and alcohol test, which is a precondition to participate in a policy debate ahead of the second round of a presidential election, conducted by the Voluntary Anti-Doping Association (VADA) at NSC Olimpiyskiy Stadium in Kiev, Ukraine April 10, 2019. REUTERS/Valentyn Ogirenko

Gitte Pedersen of Denmark, authorized by the Voluntary Anti-Doping Association (VADA), shows equipment which will be used for drug tests of Ukraine's presidential candidates next to former Boxing World champion Wladimir Klitschko at the Olimpiyskiy football stadium in Kiev, Ukraine April 10, 2019. REUTERS/Valentyn Ogirenko

Gitte Pedersen of Denmark, authorized by the Voluntary Anti-Doping Association (VADA), shows equipment which will be used for drug tests of Ukraine's presidential candidates next to former Boxing World champion Wladimir Klitschko at the Olimpiyskiy football stadium in Kiev, Ukraine April 10, 2019. REUTERS/Valentyn Ogirenko

A man holds up an anti-rabies medicine as others crowd for a free dose of the drug at a local hospital in Sanaa, Yemen March 2, 2019. Picture taken March 2, 2019. REUTERS/Mohamed al-Sayaghi

Arnaldo Giuzzio, head of Paraguay's anti-drug agency (SENAD), looks at packages containing a total of approximately 2.2 tons of cocaine and that were seized in a northern region of the country on the border with Brazil, in Asuncion, Paraguay February 7, 2019. REUTERS/Jorge Adorno

Officers from Paraguay's anti-drug agency (SENAD) accomodate packages containing a total of approximately 2.2 tons of cocaine and that were seized in a northern region of the country on the border with Brazil, in Asuncion, Paraguay February 7, 2019. REUTERS/Jorge Adorno

An anti-drug exhibit is seen at the Drug Elimination museum in Yangon, Myanmar November 6, 2018. REUTERS/Ann Wang

A soldier from Pakistan's Anti-Narcotics Force (ANF) torches a pile of confiscated drugs during a drug burning ceremony in Islamabad, Pakistan October 23, 2018. REUTERS/Faisal Mahmood

Soldiers from Pakistan's Anti-Narcotics Force (ANF) stand next to a pile of confiscated drug which was set on fire during a drug burning ceremony in Islamabad, Pakistan October 23, 2018. REUTERS/Faisal Mahmood

A soldier from Pakistan's Anti-Narcotics Force (ANF) pours gasoline on a pile of confiscated drugs which was set on fire during a drug burning ceremony in Peshawar, Pakistan, October 16, 2018. REUTERS/Fayaz Aziz

A soldier from Pakistan's Anti-Narcotics Force (ANF) walks next to a pile of confiscated drugs which was set on fire during a drug burning ceremony in Peshawar, Pakistan, October 16, 2018. REUTERS/Fayaz Aziz

Marisa de Souza Penna (C), a Brazilian citizen arrested along with four other compatriots accused of plotting to free a leader of the Red Command drug gang from jail in Paraguay, is seen at the National Anti-Drug Secretariat (SENAD) headquarters in Asuncion, Paraguay October 5, 2018. REUTERS/Jorge Adorno

Marisa de Souza Penna, a Brazilian citizen arrested along with four other compatriots accused of plotting to free a leader of the Red Command drug gang from jail in Paraguay, is escorted by police officers at the National Anti-Drug Secretariat (SENAD) headquarters in Asuncion, Paraguay October 5, 2018. REUTERS/Jorge Adorno

Marisa de Souza Penna, a Brazilian citizen arrested along with four other compatriots accused of plotting to free a leader of the Red Command drug gang from jail in Paraguay, is escorted by police officers at the National Anti-Drug Secretariat (SENAD) headquarters in Asuncion, Paraguay October 5, 2018. REUTERS/Jorge Adorno

U.S. President Donald Trump waits for the news media to leave the room while General Arthur Dean and and Ananya Pati of Community Anti-Drug Coalitions of America sit next to him during an event at which he announced a grant for a drug-free communities support program in the Roosevelt Room of the White House in Washington, U.S., August 29, 2018. REUTERS/Leah Millis

U.S. President Donald Trump holds an event at which he announced a grant for a drug-free communities support program as participants General Arthur Dean of Community Anti-Drug Coalitions of America, right, and Celeste Clark, left, listen with others in the Roosevelt Room of the White House in Washington, U.S., August 29, 2018. REUTERS/Leah Millis

Millions of Yemenis are at risk from hunger and cholera brought on by three years of war, an emergency that has also hit cancer patients, struggling to get treatment in a country where the economy and infrastructure have collapsed. The World Health Organization (WHO) said around 35,000 people have cancer in Yemen, with about 11,000 cases diagnosed each year. The National Oncology Centre in Sanaa admits around 600 new cancer patients each month. But it received only $1 million in funding last year from state entities and international aid groups, the head of the centre, Ahmed al-Ashwal, told Reuters. The few beds available at the centre are reserved for children. Other patients receive treatment intravenously, while sitting on dilapidated recliner chairs or in the waiting area. The WHO said that prior to the conflict, the centre used to receive $15 million a year from the state and that the budget was used to purchase chemotherapy medications and anti-cancer drugs for oncology centres across the country. REUTERS/Khaled Abdullah SEARCH "YEMEN CANCER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. Matching text: YEMEN-SECURITY/HEALTH

A look at the anti-drug campaign that started in May in Bangladesh. embed code and instructions: https://reut.rs/2MDgjzP

A look at the anti-drug campaign that started in May in Bangladesh.

A look at the anti-drug campaign that started in May in Bangladesh. embed code and instructions: https://reut.rs/2MDgjzP

A soldier of Paraguay's National Anti-Drug Secretariat (SENAD) incinerates marijuana in Asuncion, Paraguay June 29, 2018. REUTERS/Jorge Adorno

Soldiers of Paraguay's National Anti-Drug Secretariat (SENAD) incinerate marijuana in Asuncion, Paraguay June 29, 2018. REUTERS/Jorge Adorno

Soldiers of Paraguay's National Anti-Drug Secretariat (SENAD) incinerate marijuana in Asuncion, Paraguay June 29, 2018. REUTERS/Jorge Adorno

A member of Paraguay's National Anti-Drug Secretariat (SENAD) inspects marijuana to be incinerated in Asuncion, Paraguay June 29, 2018. REUTERS/Jorge Adorno

Soldiers of Paraguay's National Anti-Drug Secretariat (SENAD) incinerate marijuana in Asuncion, Paraguay June 29, 2018. REUTERS/Jorge Adorno

Soldiers of Paraguay's National Anti-Drug Secretariat (SENAD) pile marijuana to be incinerated in Asuncion, Paraguay June 29, 2018. REUTERS/Jorge Adorno

Soldiers of Paraguay's National Anti-Drug Secretariat (SENAD) pile marijuana to be incinerated in Asuncion, Paraguay June 29, 2018. REUTERS/Jorge Adorno

A member of Paraguay's National Anti-Drug Secretariat (SENAD) inspects marijuana to be incinerated in Asuncion, Paraguay June 29, 2018. REUTERS/Jorge Adorno

Soldiers of Paraguay's National Anti-Drug Secretariat (SENAD) guard marijuana to be incinerated in Asuncion, Paraguay June 29, 2018. REUTERS/Jorge Adorno

Soldiers of Paraguay's National Anti-Drug Secretariat (SENAD) carry marijuana to be incinerated in Asuncion, Paraguay June 29, 2018. REUTERS/Jorge Adorno

Protesters shout and gesture during a rally against the Georgian authorities' anti-drug policy following the recent police raids at several local nightclubs in Tbilisi, Georgia, May 13, 2018. REUTERS/David Mdzinarishvili

Protesters scuffle with police during a rally against the Georgian authorities' anti-drug policy following the recent police raids at several local nightclubs in Tbilisi, Georgia, May 13, 2018. REUTERS/David Mdzinarishvili

Police officers scuffle with counter-protesters during the rally against the Georgian authorities' anti-drug policy following the recent police raids at several local nightclubs in Tbilisi, Georgia, May 13, 2018. REUTERS/David Mdzinarishvili

Police officers scuffle with counter-protesters during the rally against the Georgian authorities' anti-drug policy following the recent police raids at several local nightclubs in Tbilisi, Georgia, May 13, 2018. REUTERS/David Mdzinarishvili