A deputy village chief from Cambodia's ruling party, photographed at his home in Kampong Thom province, Cambodia, July 22, 2018. Picture taken on July 22, 2018. REUTERS/Tom Allard 

Roots shroud a relief at Sambor Prei Kuk, or "the temple in the richness of the forest" an archaeological site of ancient Ishanapura, listed as a UNESCO world heritage site, in Kampong Thom province, Cambodia July 16, 2017. Picture taken July 16, 2017. REUTERS/Samrang Pring TPX IMAGES OF THE DAY 

Sambor Prei Kuk, or "the temple in the richness of the forest" an archaeological site of ancient Ishanapura, is seen after being listed as a UNESCO world heritage site, in Kampong Thom province, Cambodia July 15, 2017. Picture taken July 15, 2017. REUTERS/Samrang Pring 

A religious figure is seen inside Sambor Prei Kuk, or "the temple in the richness of the forest" an archaeological site of ancient Ishanapura, a UNESCO world heritage site, in Kampong Thom province, Cambodia July 16, 2017. Picture taken July 16, 2017. REUTERS/Samrang Pring 

A man walks at Sambor Prei Kuk, or "the temple in the richness of the forest" an archaeological site of ancient Ishanapura, after it was listed as a UNESCO world heritage site, in Kampong Thom province, Cambodia July 15, 2017. Picture taken July 15, 2017. REUTERS/Samrang Pring 

A tree is seen at Sambor Prei Kuk, or "the temple in the richness of the forest" an archaeological site of ancient Ishanapura, a UNESCO world heritage site, in Kampong Thom province, Cambodia July 15, 2017. Picture taken July 15, 2017. REUTERS/Samrang Pring 

Tourists visit Sambor Prei Kuk, or "the temple in the richness of the forest" an archaeological site of ancient Ishanapura, after it was listed as a UNESCO world heritage site, in Kampong Thom province, Cambodia July 15, 2017. Picture taken July 15, 2017. REUTERS/Samrang Pring 

A relief is seen at Sambor Prei Kuk, or "the temple in the richness of the forest" an archaeological site of ancient Ishanapura, a UNESCO world heritage site, in Kampong Thom province, Cambodia July 15, 2017. Picture taken July 15, 2017. REUTERS/Samrang Pring 

A religious figure is seen inside Sambor Prei Kuk, or "the temple in the richness of the forest" an archaeological site of ancient Ishanapura, a UNESCO world heritage site, in Kampong Thom province, Cambodia July 15, 2017. Picture taken July 15, 2017. REUTERS/Samrang Pring 

Sambor Prei Kuk, or "the temple in the richness of the forest" an archaeological site of ancient Ishanapura, is seen after being listed as a UNESCO world heritage site, in Kampong Thom province, Cambodia July 15, 2017. Picture taken July 15, 2017. REUTERS/Samrang Pring 

Roots shroud a relief at Sambor Prei Kuk, or "the temple in the richness of the forest" an archaeological site of ancient Ishanapura, listed as a UNESCO world heritage site, in Kampong Thom province, Cambodia July 16, 2017. Picture taken July 16, 2017. REUTERS/Samrang Pring 

A sculpture at Sambor Prei Kuk, or "the temple in the richness of the forest" an archaeological site of ancient Ishanapura, is seen, at the UNESCO world heritage site, in Kampong Thom province, Cambodia July 16, 2017. Picture taken July 16, 2017. REUTERS/Samrang Pring 

A relief is pictured at Sambor Prei Kuk, or "the temple in the richness of the forest" an archaeological site of ancient Ishanapura, listed as a UNESCO world heritage site, in Kampong Thom province, Cambodia July 16, 2017. Picture taken July 16, 2017. REUTERS/Samrang Pring 

Tourist visit Sambor Prei Kuk, or "the temple in the richness of the forest" an archaeological site of ancient Ishanapura, is seen after being listed as a UNESCO world heritage site, in Kampong Thom province, Cambodia July 15, 2017. Picture taken July 15, 2017. REUTERS/Samrang Pring 

A tourist visits Sambor Prei Kuk, or "the temple in the richness of the forest" an archaeological site of ancient Ishanapura, is seen after being listed as a UNESCO world heritage site, in Kampong Thom province, Cambodia July 15, 2017. Picture taken July 15, 2017. REUTERS/Samrang Pring 

Tourists visit Sambor Prei Kuk, or "the temple in the richness of the forest", an archaeological site of ancient Ishanapura, is seen after being listed as a UNESCO world heritage site, in Kampong Thom province, Cambodia July 15, 2017. Picture taken July 15, 2017. REUTERS/Samrang Pring 

A woman pray inside of a temple at Sambor Prei Kuk, or "the temple in the richness of the forest" an archaeological site of ancient Ishanapura, is seen after being listed as a UNESCO world heritage site, in Kampong Thom province, Cambodia July 15, 2017. Picture taken July 15, 2017. REUTERS/Samrang Pring 

Tarantulas walk on a woman's arm after she caught them in a spider field in Kampong Thom province in Cambodia, June 21, 2017. Picture taken June 21, 2017. REUTERS/Samrang Pring TPX IMAGES OF THE DAY 

A tarantula walks on the shoulder of a spider hunter after she caught it at a field in Kampong Thom province in Cambodia, June 21, 2017. Picture taken June 21, 2017. REUTERS/Samrang Pring 

Tarantula hunters walk at a spider field in Kampong Thom province in Cambodia, June 21, 2017. Picture taken June 21, 2017. REUTERS/Samrang Pring 

Spider hunters walk to a spider field in Kampong Thom province in Cambodia, June 21, 2017. Picture taken June 21, 2017. REUTERS/Samrang Pring 

A tarantula hunter catches a spider in a hole at a spider field in Kampong Thom province in Cambodia, June 21, 2017. Picture taken June 21, 2017. REUTERS/Samrang Pring 

Tarantulas walk on a woman's arm after she caught them in a spider field in Kampong Thom province in Cambodia, June 21, 2017. Picture taken June 21, 2017. REUTERS/Samrang Pring 

A man dries unhusked rice on a road in front of his home in Kampong Thom province, Cambodia, September 24, 2016. REUTERS/Samrang Pring 

A man dries unhusked rice on a road in front of his home in Kampong Thom province, Cambodia, September 24, 2016. REUTERS/Samrang Pring 

A girl dries unhusked rice on a road in front of her home in Kampong Thom province, Cambodia, September 24, 2016. REUTERS/Samrang Pring 

People dry unhusked rice on a road in front of their home in Kampong Thom province, Cambodia, September 24, 2016. REUTERS/Samrang Pring 

Men dry unhusked rice on a road in front of their home in Kampong Thom province, Cambodia, September 24, 2016. REUTERS/Samrang Pring 

A woman dries unhusked rice on a road in front of her home in Kampong Thom province, Cambodia, September 24, 2016. REUTERS/Samrang Pring TPX IMAGES OF THE DAY

A man dries unhusked rice on a road in front of his home in Kampong Thom province, Cambodia, September 24, 2016. REUTERS/Samrang Pring 

Margareta Wahlstrom, special representative of the United Nations Secretary General for Disaster Risk Reduction, addresses the media during a news conference in Phnom Penh April 25, 2012. Flooding is a recurrent damaging event in Cambodia and may even be worse in the future as experts predict more severe and frequent floods and storms due to climate change impacts, the UN said in a statement. The floods also took an economic toll on the country, impacting more than 1 million acres of rice paddy in Kampong Thom, Battambang and Prey Veng provinces. Wahlstrom's visit to Cambodia, which started on April 20, ended today, the UN said. REUTERS/Samrang Pring (CAMBODIA - Tags: POLITICS DISASTER) 

Margareta Wahlstrom, special representative of the United Nations Secretary General for Disaster Risk Reduction, addresses the media during a news conference in Phnom Penh April 25, 2012. Flooding is a recurrent damaging event in Cambodia and may even be worse in the future as experts predict more severe and frequent floods and storms due to climate change impacts, the UN said in a statement. The floods also took an economic toll on the country, impacting more than 1 million acres of rice paddy in Kampong Thom, Battambang and Prey Veng provinces. Wahlstrom's visit to Cambodia, which started on April 20, ended today, the UN said. REUTERS/Samrang Pring (CAMBODIA - Tags: POLITICS DISASTER) 

Margareta Wahlstrom, special representative of the United Nations Secretary General for Disaster Risk Reduction, addresses the media during a news conference in Phnom Penh April 25, 2012. Flooding is a recurrent damaging event in Cambodia and may even be worse in the future as experts predict more severe and frequent floods and storms due to climate change impacts, the UN said in a statement. The floods also took an economic toll on the country, impacting more than 1 million acres of rice paddy in Kampong Thom, Battambang and Prey Veng provinces. Wahlstrom's visit to Cambodia, which started on April 20, ended today, the UN said. REUTERS/Samrang Pring (CAMBODIA - Tags: POLITICS DISASTER) 

A boy walks in flood waters past a Buddha statue in Kampong Thom province October 13, 2011. Monsoon rains, floods and landslides have killed 207 people in Cambodia since August 13 and the damage is estimated at about $100 million, according to the Cambodian National Disaster Management Committee (CNDMC). Cambodia on Tuesday cut its gross domestic product (GDP) growth target this year from 7 percent to 6 percent, citing floods and uncertainty in U.S. and European economies. REUTERS/Samrang Pring (CAMBODIA - Tags: ENVIRONMENT DISASTER RELIGION) 

Japanese ambassador to Cambodia, Masafumi Kuroki (L), hands out a blanket to a woman during a relief item distribution ceremony in Kampong Thom province October 13, 2011. Monsoon rains, floods and landslides have killed 207 people in Cambodia since August 13 and the damage is estimated at about $100 million, according to the Cambodian National Disaster Management Committee (CNDMC). Cambodia on Tuesday cut its gross domestic product (GDP) growth target this year from 7 percent to 6 percent, citing floods and uncertainty in U.S. and European economies. REUTERS/Samrang Pring (CAMBODIA - Tags: DISASTER ENVIRONMENT POLITICS) 

People hold up tents in the rain during a relief item distribution ceremony in Kampong Thom province October 13, 2011. Monsoon rains, floods and landslides have killed 207 people in Cambodia since August 13 and the damage is estimated at about $100 million, according to the Cambodian National Disaster Management Committee (CNDMC). Cambodia on Tuesday cut its gross domestic product (GDP) growth target this year from 7 percent to 6 percent, citing floods and uncertainty in U.S. and European economies. REUTERS/Samrang Pring (CAMBODIA - Tags: ENVIRONMENT DISASTER) 

Children look out from their house at the flood waters in Kampong Thom province October 13, 2011. Monsoon rains, floods and landslides have killed 207 people in Cambodia since August 13 and the damage is estimated at about $100 million, according to the Cambodian National Disaster Management Committee (CNDMC). Cambodia on Tuesday cut its gross domestic product (GDP) growth target this year from 7 percent to 6 percent, citing floods and uncertainty in U.S. and European economies. REUTERS/Samrang Pring (CAMBODIA - Tags: ENVIRONMENT DISASTER) 

A man rows his boat through flood waters in Kampong Thom province October 13, 2011. Monsoon rains, floods and landslides have killed 207 people in Cambodia since August 13 and the damage is estimated at about $100 million, according to the Cambodian National Disaster Management Committee (CNDMC). Cambodia on Tuesday cut its gross domestic product (GDP) growth target this year from 7 percent to 6 percent, citing floods and uncertainty in U.S. and European economies. REUTERS/Samrang Pring (CAMBODIA - Tags: ENVIRONMENT DISASTER) 

People hold up a tent in the rain during a relief item distribution ceremony in Kampong Thom province October 13, 2011. Monsoon rains, floods and landslides have killed 207 people in Cambodia since August 13 and the damage is estimated at about $100 million, according to the Cambodian National Disaster Management Committee (CNDMC). Cambodia on Tuesday cut its gross domestic product (GDP) growth target this year from 7 percent to 6 percent, citing floods and uncertainty in U.S. and European economies. REUTERS/Samrang Pring (CAMBODIA - Tags: ENVIRONMENT DISASTER) 

People eat rice on a makeshift tent after their house was flooded in Kampong Thom province October 13, 2011. Monsoon rains, floods and landslides have killed 207 people in Cambodia since August 13 and the damage is estimated at about $100 million, according to the Cambodian National Disaster Management Committee (CNDMC). Cambodia on Tuesday cut its gross domestic product (GDP) growth target this year from 7 percent to 6 percent, citing floods and uncertainty in U.S. and European economies. REUTERS/Samrang Pring (CAMBODIA - Tags: ENVIRONMENT DISASTER SOCIETY) 

Children walk on a makeshift wooden walkway above the flood waters in Kampong Thom province October 13, 2011. Monsoon rains, floods and landslides have killed 207 people in Cambodia since August 13 and the damage is estimated at about $100 million, according to the Cambodian National Disaster Management Committee (CNDMC). Cambodia on Tuesday cut its gross domestic product (GDP) growth target this year from 7 percent to 6 percent, citing floods and uncertainty in U.S. and European economies. REUTERS/Samrang Pring (CAMBODIA - Tags: ENVIRONMENT DISASTER) 

Youths row a boat loaded with their belongings through the flood waters in Kampong Thom province October 13, 2011. Monsoon rains, floods and landslides have killed 207 people in Cambodia since August 13 and the damage is estimated at about $100 million, according to the Cambodian National Disaster Management Committee (CNDMC). Cambodia on Tuesday cut its gross domestic product (GDP) growth target this year from 7 percent to 6 percent, citing floods and uncertainty in U.S. and European economies. REUTERS/Samrang Pring (CAMBODIA - Tags: ENVIRONMENT DISASTER) 

First Vice-President of Cambodia's National Committee for Disaster Management (NCDM), Nhim Vanda, shakes hands with people during a relief item distribution ceremony in Kampong Thom province October 13, 2011. Monsoon rains, floods and landslides have killed 207 people in Cambodia since August 13 and the damage is estimated at about $100 million, according to the Cambodian National Disaster Management Committee (CNDMC). Cambodia on Tuesday cut its gross domestic product (GDP) growth target this year from 7 percent to 6 percent, citing floods and uncertainty in U.S. and European economies. REUTERS/Samrang Pring (CAMBODIA - Tags: ENVIRONMENT DISASTER) 

A woman rows her boat to a house through the flood waters in Kampong Thom province October 13, 2011. Monsoon rains, floods and landslides have killed 207 people in Cambodia since August 13 and the damage is estimated at about $100 million, according to the Cambodian National Disaster Management Committee (CNDMC). Cambodia on Tuesday cut its gross domestic product (GDP) growth target this year from 7 percent to 6 percent, citing floods and uncertainty in U.S. and European economies. REUTERS/Samrang Pring (CAMBODIA - Tags: ENVIRONMENT DISASTER SOCIETY) 

Youths row a boat loaded with their belongings through the flood waters in Kampong Thom province October 13, 2011. Monsoon rains, floods and landslides have killed 207 people in Cambodia since August 13 and the damage is estimated at about $100 million, according to the Cambodian National Disaster Management Committee (CNDMC). Cambodia on Tuesday cut its gross domestic product (GDP) growth target this year from 7 percent to 6 percent, citing floods and uncertainty in U.S. and European economies. REUTERS/Samrang Pring (CAMBODIA - Tags: DISASTER ENVIRONMENT SOCIETY) 

A boy stands with two dogs on a makeshift wooden walkway above the flood waters in Kampong Thom province October 13, 2011. Monsoon rains, floods and landslides have killed 207 people in Cambodia since August 13 and the damage is estimated at about $100 million, according to the Cambodian National Disaster Management Committee (CNDMC). Cambodia on Tuesday cut its gross domestic product (GDP) growth target this year from 7 percent to 6 percent, citing floods and uncertainty in U.S. and European economies. REUTERS/Samrang Pring (CAMBODIA - Tags: ENVIRONMENT DISASTER TPX IMAGES OF THE DAY) 

People cross through waters on a street flooded by Typhoon Ketsana at Sandane district in Kampong Thom province 168km (104 miles) north of Cambodia's capital Phnom Penh September 30, 2009. At least nine people were killed and 13 injured as Typhoon Ketsana struck central Cambodia, Chun Chorn, governor of Kampong Thom said. REUTERS/Chor Sokunthea (CAMBODIA ENVIRONMENT DISASTER) 

People look from a house hit by floodwaters from Typhoon Ketsana at Sandane district in Kampong Thom province, 168km (104 miles) north of Cambodia's capital Phnom Penh September 30, 2009. At least nine people were killed and 13 injured as Typhoon Ketsana struck central Cambodia, Chun Chorn, governor of Kampong Thom said.
REUTERS/Chor Sokunthea (CAMBODIA DISASTER ENVIRONMENT) 

People work to retrieve a motorbike buried under a house hit by floodwaters from Typhoon Ketsana at Sandane district in Kampong Thom province 168km (104 miles) north of Cambodia's capital Phnom Penh September 30, 2009. At least nine people were killed and 13 injured as Typhoon Ketsana struck central Cambodia, Chun Chorn, governor of Kampong Thom said. REUTERS/Chor Sokunthea (CAMBODIA ENVIRONMENT DISASTER) 

People cross through waters on a street flooded by Typhoon Ketsana at Sandane district in Kampong Thom province 168km (104 miles) north of Cambodia's capital Phnom Penh September 30, 2009. At least nine people were killed and 13 injured as Typhoon Ketsana struck central Cambodia, Chun Chorn, governor of Kampong Thom said. REUTERS/Chor Sokunthea (CAMBODIA ENVIRONMENT DISASTER) 

A woman weeps near the bodies of people killed by Typhoon Ketsana at Sandane district in Kampong Thom province 168km (104 miles) north of Cambodia's capital Phnom Penh September 30, 2009. At least nine people were killed and 13 injured as Typhoon Ketsana struck central Cambodia, Chun Chorn, governor of Kampong Thom said. REUTERS/Chor Sokunthea (CAMBODIA ENVIRONMENT DISASTER) 

People carry a motorbike over waters on a street flooded by Typhoon Ketsana at Sandane district in Kampong Thom province 168km (104 miles) north of Cambodia's capital Phnom Penh September 30, 2009. At least nine people were killed and 13 injured as Typhoon Ketsana struck central Cambodia, Chun Chorn, governor of Kampong Thom said. REUTERS/Chor Sokunthea (CAMBODIA ENVIRONMENT DISASTER IMAGES OF THE DAY) 

A villager looks at the bodies of people killed by Typhoon Ketsana at Sandane district in Kampong Thom province 168km (104 miles) north of Cambodia's capital Phnom Penh September 30, 2009. At least nine people were killed and 13 injured as Typhoon Ketsana struck central Cambodia, Chun Chorn, governor of Kampong Thom said. REUTERS/Chor Sokunthea (CAMBODIA ENVIRONMENT DISASTER) 

ATTENTION EDITORS - VISUALS COVERAGE SCENES OF DEATH AND INJURY

A villager looks at the bodies of people killed by Typhoon Ketsana at Sandane district in Kampong Thom province 168km (104 miles) north of Cambodia's capital Phnom Penh September 30, 2009. At least nine people were killed and 13 injured as Typhoon Ketsana struck central Cambodia, Chun Chorn, governor of Kampong Thom said. REUTERS/Chor Sokunthea (CAMBODIA ENVIRONMENT DISASTER) 

ATTENTION EDITORS - VISUALS COVERAGE SCENES DEATH AND INJURY

A villager touches the feet of people killed by Typhoon Ketsana at Sandane district in Kampong Thom province 168km (104 miles) north of Cambodia's capital Phnom Penh September 30, 2009. At least nine people were killed and 13 injured as Typhoon Ketsana struck central Cambodia, Chun Chorn, governor of Kampong Thom said. REUTERS/Chor Sokunthea (CAMBODIA ENVIRONMENT DISASTER IMAGES OF THE DAY) 

ATTENTION EDITORS - VISUALS COVERAGE SCENES OF DEATH AND INJURY

Villagers stand around the bodies of people killed by Typhoon Ketsana at Sandane district in Kampong Thom province 168km (104 miles) north of Cambodia's capital Phnom Penh September 30, 2009. At least nine people were killed and 13 injured as Typhoon Ketsana struck central Cambodia, Chun Chorn, governor of Kampong Thom said. REUTERS/Chor Sokunthea (CAMBODIA ENVIRONMENT DISASTER) 

A villager walks past houses damaged by Typhoon Ketsana at Sandane district in Kampong Thom province 168km (104 miles) north of the capital, Phnom Penh September 30, 2009. At least nine people were killed and 13 injured as Typhoon Ketsana struck central Cambodia, Chun Chorn, governor of Kampong Thom said .REUTERS/Chor Sokunthea (CAMBODIA ENVIRONMENT DISASTER) 

Pol Nip, 84-year-old, youngest brother of the democratic leader Kampuchea Pol Pot, reads a paper at his house in Okanthor commune in Kampong Thom, about 165km (103 miles) northeast of Phnom Penh July 15, 2009. REUTERS/Chor Sokunthea (CAMBODIA CRIME LAW CONFLICT) 

Pol Nip, 84-year-old, youngest brother of the democratic leader Kampuchea Pol Pot, speaks on the phone at his house in Okanthor commune in Kampong Thom, about 165km (103 miles) northeast of Phnom Penh July 15, 2009. REUTERS/Chor Sokunthea (CAMBODIA CRIME LAW CONFLICT) 

Media officer of the Extraordinary Chamber in the Court of Cambodia (ECCC) Dim Sovannarom (obscured) explains the ECCC booklet to Pol Nip, 84-year-old, youngest brother of the democratic leader Kampuchea Pol Pot, at his house in Okanthor commune in Kampong Thom, about 165km (103 miles) northeast of Phnom Penh July 15, 2009. The ECCC invited all Cambodians to attend the trial of Khmer Rouge regime's chief torturer Kaing Guek Eav, also known as Duch. REUTERS/Chor Sokunthea (CAMBODIA CRIME LAW CONFLICT)