An ethnic Akha woman prays for the return of the missing members of an under-16 soccer team and their coach, near the Tham Luang cave complex, as an ongoing search for them continues, in the northern province of Chiang Rai, Thailand, June 30, 2018. REUTERS/Soe Zeya Tun 

An ethnic Akha woman prays for the return of the missing members of an under-16 soccer team and their coach, near the Tham Luang cave complex, as an ongoing search for them continues, in the northern province of Chiang Rai, Thailand, June 30, 2018. REUTERS/Soe Zeya Tun 

An ethnic Akha woman prays for the return of the missing members of an under-16 soccer team and their coach, near the Tham Luang cave complex, as an ongoing search for them continues, in the northern province of Chiang Rai, Thailand June 30, 2018. REUTERS/Soe Zeya Tun 

Ethnic Akha women pray for the return of the missing members of an under-16 soccer team and their coach, near the Tham Luang cave complex, as an ongoing search for them continues, in the northern province of Chiang Rai, Thailand, June 30, 2018. REUTERS/Soe Zeya Tun 

An ethnic Akha woman asks a police officer to be allowed to go in to pray for the return of the missing members of an under-16 soccer team and their coach, near the Tham Luang cave complex, as an ongoing search for them continues, in the northern province of Chiang Rai, Thailand, June 30, 2018. REUTERS/Soe Zeya Tun 

Ethnic Akha women march during a festival in a village outside Pansang, Wa territory in north east Myanmar October 3, 2016. Picture taken October 3, 2016. REUTERS/Soe Zeya Tun 

Ethnic Akha women march during a festival in a village outside Pansang, Wa territory in northeast Myanmar October 3, 2016. Picture taken on October 3, 2016. REUTERS/Soe Zeya Tun 

Members of the Akha ethnic minority group, who are living in Thailand, joined other stateless groups as they gather outside the Government House in Bangkok March 29, 2012. Activists have reported more than 400,000 stateless people are living in Thailand, and have urged the government to certify them with Thai nationality, as well as calling for a better standard of living. REUTERS/Chaiwat Subprasom (THAILAND - Tags: POLITICS CIVIL UNREST SOCIETY) 

Members of the Akha ethnic minority group, who are living in Thailand, joined other stateless groups as they gather outside the Government House in Bangkok March 29, 2012. Activists have reported more than 400,000 stateless people are living in Thailand, and have urged the government to certify them with Thai nationality, as well as calling for a better standard of living. REUTERS/Chaiwat Subprasom (THAILAND - Tags: POLITICS CIVIL UNREST SOCIETY) 

A woman from the Akha ethnic minority group living in Thailand, joined other stateless groups as they gather outside the Government House in Bangkok March 29, 2012. Activists have reported more than 400,000 of stateless people are living in Thailand, and have urged the government to certify them with Thai nationality, as well as calling for a better standard of living. REUTERS/Chaiwat Subprasom (THAILAND - Tags: POLITICS CIVIL UNREST SOCIETY TPX IMAGES OF THE DAY) 

ATTENTION EDITORS THIS IS 18 OF 35 PICTURES FROM MYANMAR'S OPIUM WAR BY REUTERS PHOTOGRAPHER DAMIR SAGOLJ

An ethnic Akha child wearing traditional clothes is seen as villagers meet representatives of the United Nations Office on Drugs and Crime (UNODC) and Myanmar's police at the village of Kor Miang Pin, in the mountains of Shan State January 29, 2012. Myanmar has dramatically escalated its poppy eradication efforts since September 2011, threatening the livelihoods of impoverished farmers who depend upon opium as a cash crop to buy food. With new ceasefires ending years of conflict between the government and ethnic insurgents, Myanmar police and United Nations officials are travelling through opium-rich Shan State to ask farmers what assistance they need. Picture taken January 29, 2012. REUTERS/Damir Sagolj (MYANMAR - Tags: DRUGS SOCIETY) 

ATTENTION EDITORS THIS IS 23 OF 35 PICTURES FROM MYANMAR'S OPIUM WAR BY REUTERS PHOTOGRAPHER DAMIR SAGOLJ

An ethnic Akha woman wearing traditional clothes decorated with colonial era coins is seen as villagers meet representatives of the United Nations Office on Drugs and Crime (UNODC) and Myanmar's police at the village of Kor Miang Pin, in the mountains of Shan State January 29, 2012. Myanmar has dramatically escalated its poppy eradication efforts since September 2011, threatening the livelihoods of impoverished farmers who depend upon opium as a cash crop to buy food. With new ceasefires ending years of conflict between the government and ethnic insurgents, Myanmar police and United Nations officials are travelling through opium-rich Shan State to ask farmers what assistance they need. Picture taken January 29, 2012. REUTERS/Damir Sagolj (MYANMAR - Tags: DRUGS SOCIETY) 

ATTENTION EDITORS THIS IS 24 OF 35 PICTURES FROM MYANMAR'S OPIUM WAR BY REUTERS PHOTOGRAPHER DAMIR SAGOLJ

Ethnic Akha women wearing traditional clothes meet representatives of the United Nations Office on Drugs and Crime (UNODC) and Myanmar's police at the village of Kor Miang Pin, in the mountains of Shan State January 29, 2012. Myanmar has dramatically escalated its poppy eradication efforts since September 2011, threatening the livelihoods of impoverished farmers who depend upon opium as a cash crop to buy food. With new ceasefires ending years of conflict between the government and ethnic insurgents, Myanmar police and United Nations officials are travelling through opium-rich Shan State to ask farmers what assistance they need. Picture taken January 29, 2012. REUTERS/Damir Sagolj (MYANMAR - Tags: DRUGS SOCIETY) 

ATTENTION EDITORS THIS IS 8 OF 35 PICTURES FROM MYANMAR'S OPIUM WAR BY REUTERS PHOTOGRAPHER DAMIR SAGOLJ

Ethnic Akha women wearing traditional clothes meet representatives of the United Nations Office on Drugs and Crime (UNODC) representatives and Myanmar's police at the village of Kor Miang Pin, in the mountains of Shan State January 29, 2012. Myanmar has dramatically escalated its poppy eradication efforts since September 2011, threatening the livelihoods of impoverished farmers who depend upon opium as a cash crop to buy food. With new ceasefires ending years of conflict between the government and ethnic insurgents, Myanmar police and United Nations officials are travelling through opium-rich Shan State to ask farmers what assistance they need. Picture taken January 29, 2012. REUTERS/Damir Sagolj (MYANMAR - Tags: DRUGS SOCIETY) 

ATTENTION EDITORS THIS IS 11 OF 35 PICTURES FROM MYANMAR'S OPIUM WAR BY REUTERS PHOTOGRAPHER DAMIR SAGOLJ

Ethnic Akha women wearing traditional clothes meet representatives of the United Nations Office on Drugs and Crime (UNODC) and Myanmar's police at the village of Kor Miang Pin, in the mountains of Shan State January 29, 2012. Myanmar has dramatically escalated its poppy eradication efforts since September 2011, threatening the livelihoods of impoverished farmers who depend upon opium as a cash crop to buy food. With new ceasefires ending years of conflict between the government and ethnic insurgents, Myanmar police and United Nations officials are travelling through opium-rich Shan State to ask farmers what assistance they need. Picture taken January 29, 2012. REUTERS/Damir Sagolj (MYANMAR - Tags: DRUGS SOCIETY) 

ATTENTION EDITORS THIS IS 12 OF 35 PICTURES FROM MYANMAR'S OPIUM WAR BY REUTERS PHOTOGRAPHER DAMIR SAGOLJ

Ethnic Akha women wearing traditional clothes meet representatives of the United Nations Office on Drug and Crime (UNODC) and Myanmar's police at the village of Kor Miang Pin, in the mountains of Shan State January 29, 2012. Myanmar has dramatically escalated its poppy eradication efforts since September 2011, threatening the livelihoods of impoverished farmers who depend upon opium as a cash crop to buy food. With new ceasefires ending years of conflict between the government and ethnic insurgents, Myanmar police and United Nations officials are travelling through opium-rich Shan State to ask farmers what assistance they need. Picture taken January 29, 2012. REUTERS/Damir Sagolj (MYANMAR - Tags: DRUGS SOCIETY) 

ATTENTION EDITORS THIS IS 14 OF 35 PICTURES FROM MYANMAR'S OPIUM WAR BY REUTERS PHOTOGRAPHER DAMIR SAGOLJ

Ethnic Akha people meet representatives from the United Nations Office on Drugs and Crime (UNODC) and Myanmar police in the village of Kor Miang Pin, in the mountains of Shan State January 29, 2012. Myanmar has dramatically escalated its poppy eradication efforts since September 2011, threatening the livelihoods of impoverished farmers who depend upon opium as a cash crop to buy food. With new ceasefires ending years of conflict between the government and ethnic insurgents, Myanmar police and United Nations officials are travelling through opium-rich Shan State to ask farmers what assistance they need. Picture taken January 29, 2012.
REUTERS/Damir Sagolj (MYANMAR - Tags: DRUGS SOCIETY) 

ATTENTION EDITORS THIS IS 17 OF 35 PICTURES FROM MYANMAR'S OPIUM WAR BY REUTERS PHOTOGRAPHER DAMIR SAGOLJ

An ethnic Akha child wearing traditional clothes is seen as villagers meet representatives of the United Nations Office on Drugs and Crime (UNODC) and Myanmar's police at the village of Kor Miang Pin, in the mountains of Shan State January 29, 2012. Myanmar has dramatically escalated its poppy eradication efforts since September 2011, threatening the livelihoods of impoverished farmers who depend upon opium as a cash crop to buy food. With new ceasefires ending years of conflict between the government and ethnic insurgents, Myanmar police and United Nations officials are travelling through opium-rich Shan State to ask farmers what assistance they need. Picture taken January 29, 2012.
REUTERS/Damir Sagolj (MYANMAR - Tags: DRUGS SOCIETY) 

An ethnic Akha woman prepares food as villagers meet with representatives of the United Nations Office of Drugs and Crime (UNODC) and Myanmar's police in the village of Kor Miang Pin, in the mountains of Shan State January 29, 2012. Myanmar has dramatically escalated its poppy eradication efforts since September 2011, threatening the livelihoods of impoverished farmers who depend upon opium as a cash crop to buy food. With new ceasefires ending years of conflict between the government and ethnic insurgents, Myanmar police and United Nations officials are travelling through opium-rich Shan State to ask farmers what assistance they need. REUTERS/Damir Sagolj (MYANMAR - Tags: DRUGS SOCIETY) 

Ethnic Akha people wearing traditional clothes meet UN representatives and Myanmar police in the village of Kor Miang Pin, in the mountains of Shan State January 29, 2012. Myanmar has dramatically escalated its poppy eradication efforts since September 2011, threatening the livelihoods of impoverished farmers who depend upon opium as a cash crop to buy food. With new ceasefires ending years of conflict between the government and ethnic insurgents, Myanmar police and United Nations officials are travelling through opium-rich Shan State to ask farmers what assistance they need. To match Special Report MYANMAR/OPIUM REUTERS/Damir Sagolj (MYANMAR - Tags: SOCIETY DRUGS) 

Ethnic Akha people talk to a policeman as villagers meet UN and Myanmar's police representatives in the village of Kor Miang Pin in mountains of Shan State January 29, 2012. Myanmar has dramatically escalated its poppy eradication efforts since September 2011, threatening the livelihoods of impoverished farmers who depend upon opium as a cash crop to buy food. With new ceasefires ending years of conflict between the government and ethnic insurgents, Myanmar police and United Nations officials are travelling through opium-rich Shan State to ask farmers what assistance they need. To match Special Report MYANMAR/OPIUM REUTERS/Damir Sagolj (MYANMAR - Tags: SOCIETY DRUGS) 

Ethnic Akha children watch male stag beetles fight at Mae Fahluang District, Chiang Rai province, in northern Thailand, 825 km (513 miles) from Bangkok, August 20, 2011. There are at least 7 major ethnic minority groups and some 50,000 people that have not received Thai citizenship, living in Chiang Rai, according to Plan International in Thailand. Picture taken August 20, 2011. REUTERS/Sukree Sukplang (THAILAND - Tags: POLITICS SOCIETY) 

Children from the ethnic Akha tribe watch male stag beetles fight at Mae Fahluang District, Chiang Rai province, in northern Thailand, 825 km (513 miles) from Bangkok, August 20, 2011. REUTERS/Sukree Sukplang (THAILAND - Tags: SOCIETY ANIMALS) 

Ethnic Akha children watch male stag beetles fight at Mae Fahluang District, Chiang Rai province, in northern Thailand, 825 km (513 miles) from Bangkok, August 20, 2011. REUTERS/Sukree Sukplang (THAILAND - Tags: SOCIETY ANIMALS IMAGES OF THE DAY) 

An ethnic Akha tribe woman sells bags with traditional decorations at a local market at Mae Salongnok District, Chiang Rai province, in the northern part of Thailand, 825 km (513 miles) from Bangkok, August 20, 2011. REUTERS/Sukree Sukplang (THAILAND - Tags: SOCIETY) 

An Akha hill-tribesman arranges the meat of a slaughtered cow during a traditional ceremony in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (560 miles) north of Bangkok December 23, 2007. Picture taken December 23, 2007. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hill-tribesman arranges the meat of slaughtered cow during the celebration of a traditional ceremony in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (560 miles) north of Bangkok December 23, 2007. Picture taken December 23, 2007. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hill-tribe boy sits next to a slaughtered cow during the celebration of a traditional ceremony in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (560 miles) north of Bangkok December 23, 2007. Picture taken December 23, 2007. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hill-tribe boy sits next to a slaughtered cow during the celebration of a traditional ceremony in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (560 miles) north of Bangkok December 23, 2007. Picture taken December 23, 2007. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hill-tribesman slaughters a cow during the celebration of a traditional ceremony in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (560 miles) north of Bangkok December 23, 2007. Picture taken December 23, 2007. REUTERS/Sukree Sukplang (THAILAND) 

Akha hill-tribesmen slaughter a cow as they celebrate a traditional ceremony in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (560 miles) north of Bangkok December 23, 2007. Picture taken December 23, 2007. REUTERS/Sukree Sukplang (THAILAND) 

Akha hill-tribesmen slaughter a cow as they celebrate a traditional ceremony in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (560 miles) north of Bangkok December 23, 2007. Picture taken December 23, 2007. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hilltribe child is seen at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (660 miles) north of Bangkok December 23, 2007. Thais voted on Sunday in a general election meant to restore democracy after last year's military coup but which is unlikely to heal Thailand's deep political divisions. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hilltribe child plays with a doll at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (660 miles) north of Bangkok December 23, 2007. Thais voted on Sunday in a general election meant to restore democracy after last year's military coup but which is unlikely to heal Thailand's deep political divisions. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hill-tribe woman casts a ballot as her son stands next to her at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (660 miles) north of Bangkok December 23, 2007. Thais voted on Sunday in a general election meant to restore democracy after last year's military coup but which is unlikely to heal Thailand's deep political divisions. REUTERS/Sukree Sukplang (THAILAND) 

Akha hill-tribeswoman are given ballots at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (660 miles) north of Bangkok December 23, 2007. Thais voted on Sunday in a general election meant to restore democracy after last year's military coup but which is unlikely to heal Thailand's deep political divisions. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hill-tribeswoman casts her vote at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (560 miles) north of Bangkok December 23, 2007. REUTERS/Sukree Sukplang (THAILAND) 

Akha hill-tribeswomen and men wait in line to vote at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km north of Bangkok on December 23, 2007.REUTERS/Sukree Sukplang (THAILAND) 

Akha hilltribes cast their votes at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km north of Bangkok on December 23, 2007. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hill-tribe woman casts a ballot at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (660 miles) north of Bangkok December 23, 2007. Thais voted on Sunday in a general election meant to restore democracy after last year's military coup but which is unlikely to heal Thailand's deep political divisions. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hill-tribe woman casts a ballot as her son stands next to her at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (660 miles) north of Bangkok December 23, 2007. Thais voted on Sunday in a general election meant to restore democracy after last year's military coup but which is unlikely to heal Thailand's deep political divisions. REUTERS/Sukree Sukplang (THAILAND) 

Akha hill-tribe women show their identification cards before voting at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (660 miles) north of Bangkok December 23, 2007. Thais voted on Sunday in a general election meant to restore democracy after last year's military coup but which is unlikely to heal Thailand's deep political divisions.REUTERS/Sukree Sukplang (THAILAND) 

An Akha hill-tribe woman is given a ballot at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (660 miles) north of Bangkok December 23, 2007. Thais voted on Sunday in a general election meant to restore democracy after last year's military coup but which is unlikely to heal Thailand's deep political divisions. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hill-tribe woman shows her identification card before voting at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (660 miles) north of Bangkok December 23, 2007. Thais voted on Sunday in a general election meant to restore democracy after last year's military coup but which is unlikely to heal Thailand's deep political divisions. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hill-tribe woman shows her identification card before voting at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (660 miles) north of Bangkok December 23, 2007. Thais voted on Sunday in a general election meant to restore democracy after last year's military coup but which is unlikely to heal Thailand's deep political divisions. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hill-tribe woman casts her vote while carrying her son at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (660 miles) north of Bangkok December 23, 2007. Thais voted on Sunday in a general election meant to restore democracy after last year's military coup but which is unlikely to heal Thailand's deep political divisions.REUTERS/Sukree Sukplang (THAILAND) 

Akha hill-tribe women show their identification cards before voting at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (660 miles) north of Bangkok December 23, 2007. Thais voted on Sunday in a general election meant to restore democracy after last year's military coup but which is unlikely to heal Thailand's deep political divisions.REUTERS/Sukree Sukplang (THAILAND) 

Akha hill-tribe women look for their names on an electoral list before voting at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (660 miles) north of Bangkok December 23, 2007. Thais voted on Sunday in a general election meant to restore democracy after last year's military coup but which is unlikely to heal Thailand's deep political divisions. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hill-tribe woman casts her vote at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (660 miles) north of Bangkok December 23, 2007. Thais voted on Sunday in a general election meant to restore democracy after last year's military coup but which is unlikely to heal Thailand's deep political divisions. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hill-tribe woman casts her vote at a polling station in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (660 miles) north of Bangkok December 23, 2007. Thais voted on Sunday in a general election meant to restore democracy after last year's military coup but which is unlikely to heal Thailand's deep political divisions. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hilltribe woman sits next to campaign posters of candidates in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (560 miles) north of Bangkok, December 22, 2007. Post-coup Thailand is gearing up for a general election on December 23, 2007. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hilltribe woman sits next to campaign posters of a candidate in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (560 miles) north of Bangkok, December 22, 2007. Post-coup Thailand is gearing up for a general election on December 23, 2007. REUTERS/Sukree Sukplang (THAILAND) 

Akha hilltribe women wait for an election candidate during a campaign rally in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (560 miles) north of Bangkok, November 27, 2007. Post-coup Thailand's general election is on December 23. REUTERS/Sukree Sukplang (THAILAND) 

An Akha hilltribe woman smiles as she stands next to a campaign photo of a candidate during a rally in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (560 miles) north of Bangkok, November 27, 2007. Post-coup Thailand's general election is on December 23.
REUTERS/Sukree Sukplang (THAILAND) 

Akha hilltribe women hold campaign photos of a candidate during a rally in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (560 miles) north of Bangkok, November 27, 2007. Post-coup Thailand's general election is on December 23, 2007.
REUTERS/Sukree Sukplang (THAILAND) 

Akha hilltribe women hold campaign photos of a candidate during a rally in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (560 miles) north of Bangkok, November 27, 2007. Post-coup Thailand is gearing towards a general election on December 23, 2007. REUTERS/Sukree Sukplang (THAILAND) 

Akha hill-tribe women hold campaign posters of a candidate during a rally in a remote Thai village bordering Myanmar in Mae Aye district, 900 km north of Bangkok, November 27, 2007. Post-coup Thailand's general election is due on December 23.
REUTERS/Sukree Sukplang (THAILAND) 

Akha tribeswomen hold campaign photos of a candidate during a rally in a remote Thai village bordering Myanmar in Mae Aye district, 900 km (559 miles) north of Bangkok November 27, 2007. Post-coup Thailand's general election is due on December 23.
REUTERS/Sukree Sukplang (THAILAND) 

An Akha hills tribeswoman holds her child as she stands at a spot overlooking hills formerly cultivated with poppies in the Phongsali province of Laos in this February 15, 2006 file photograph. In concert with donors and the United Nations Office for Drugs and Crime, Laos has gone from being the world's third biggest producer of heroin, which comes from opium resin, in 1998 to declaring itself free of poppy cultivation in February 2006. File photograph taken February 15, 2006. To match feature LAOS-OPIUM REUTERS/Adrees Latif 

Akha hills tribeswomen gather during a visit by the United Nations Office for Drugs and Crime (UNODC) in the Phongsali province of Laos in this February 15, 2006 file photograph. In concert with donors and the UNODC, Laos has gone from being the world's third biggest producer of heroin, which comes from opium resin, in 1998 to declaring itself free of poppy cultivation in February 2006. File photograph taken February 15, 2006. To match feature LAOS-OPIUM REUTERS/Adrees Latif