Botswana's President and leader of the Botswana Democratic Party (BDP) Mokgweetsi Masisi casts his vote at his home village of Moshupa, in the Southern District of Botswana, October 23, 2019. REUTERS/Siyabonga Sishi

Botswana's President and leader of the Botswana Democratic Party (BDP) Mokgweetsi Masisi casts his vote at his home village of Moshupa, in the Southern District of Botswana, October 23,2019. REUTERS/Siyabonga Sishi

Botswana's President and leader of the Botswana Democratic Party (BDP) Mokgweetsi Masisi casts his vote at his home village of Moshupa, in the Southern District of Botswana, October 23, 2019. REUTERS/Siyabonga Sishi

A woman casts her ballot at Moshupa village, in the Southern District of Botswana, October 23, 2019. REUTERS/Siyabonga Sishi

The Duke of Sussex joins in a confidence building exercise with young people during a visit to the Kasane Health Post, run by the Sentebale charity, in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

The Duke of Sussex poses with the head of programmes for Sentebale Botswana, Ketlogetswe Montshiwa, during a visit to the Kasane Health Post, run by the Sentebale charity, in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, helps a local schoolboy to plant a tree at the Chobe National Park, on day four of the royal tour of Africa, in Botswana September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, helps a local schoolboy to plant a tree at the Chobe National Park, on day four of the royal tour of Africa, in Botswana September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, gives a television interview during a tree planting event with local schoolchildren, at the Chobe National Park, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, is seen during a tree planting event with local schoolchildren, at the Chobe National Park, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

The Duke of Sussex is greeted by Tlotlo Moilwa during a visit to the Kasane Health Post, run by the Sentebale charity, in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

The Duke of Sussex is greeted by Tlotlo Moilwa during a visit to the Kasane Health Post, run by the Sentebale charity, in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

The Duke of Sussex visits the Kasane Health Post, run by the Sentebale charity, in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, helps to plant a tree at the Chobe National Park, on day four of the royal tour of Africa, in Botswana September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, helps to plant a tree at the Chobe National Park, on day four of the royal tour of Africa, in Botswana September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, speaks to a founder of Elephants Without Borders Dr Mike Chase, during a tree planting event with local schoolchildren, at the Chobe National Park, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, joins in a group exercise during a tree planting event with local children at the Chobe National Park, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

The Duke of Sussex joins in a confidence building exercise with young people at the Kasane Health Post, run by the Sentebale charity, in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, and a founder of Elephants Without Borders Dr Mike Chase, are welcomed to a tree planting event by local children, at the Chobe National Park, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, speaks to a founder of Elephants Without Borders Dr Mike Chase, during a tree planting event with local schoolchildren, at the Chobe National Park, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

The Duke of Sussex joins in a confidence building exercise with young people at the Kasane Health Post, run by the Sentebale charity, in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, is seen during a tree planting event with local schoolchildren, at the Chobe National Park, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, is pictured during one of his activities joining a Botswana Defence Force anti-poaching patrol on the Chobe River in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, listens to a member of a Botswana Defence Force anti-poaching patrol, near to the Chobe river, in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

A Botswana Defence Force anti-poaching patrol, on the Chobe river, is seen during the visit of Britain's Prince Harry, Duke of Sussex, in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

A Botswana Defence Force anti-poaching patrol, on the Chobe river, is seen during the visit of Britain's Prince Harry, Duke of Sussex, in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, is pictured during one of his activities joining a Botswana Defence Force anti-poaching patrol on the Chobe River in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, joins a Botswana Defence Force anti-poaching patrol on the Chobe River in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, joins a Botswana Defence Force anti-poaching patrol on the Chobe River in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, joins a Botswana Defence Force anti-poaching patrol on the Chobe River in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, joins a Botswana Defence Force anti-poaching patrol on the Chobe River in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, joins a Botswana Defence Force anti-poaching patrol on the Chobe River in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, helps to plant a tree at the Chobe National Park, on day four of the royal tour of Africa, in Botswana September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, helps to plant a tree at the Chobe National Park, on day four of the royal tour of Africa, in Botswana September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, speaks to the media at the Chobe National Park, on day four of the royal tour of Africa, in Botswana September 26, 2019. Dominic Lipinski/Pool via REUTERS

Britain's Prince Harry, Duke of Sussex, helps a local schoolboy to plant a tree at the Chobe National Park, on day four of the royal tour of Africa, in Botswana September 26, 2019. Dominic Lipinski/Pool via REUTERS

Buildings are seen in the Central Business District (CBD) in the capital Gaborone, Botswana, September 21, 2018. REUTERS/Siphiwe Sibeko

A car drives past a construction site of the Central Business District (CBD) in the capital Gaborone, Botswana, September 21, 2018. REUTERS/Siphiwe Sibeko

A woman crosses rail tracks in the Central Business District (CBD), in the capital Gaborone, Botswana, September 21, 2018. REUTERS/Siphiwe Sibeko

People cross rail tracks in the Central Business District (CBD), in the capital Gaborone, Botswana, September 21, 2018. REUTERS/Siphiwe Sibeko

Local workers queue to buy food at a makeshift food shops near a construction site of the Central Business District (CBD) in the capital Gaborone, Botswana, September 21, 2018. REUTERS/Siphiwe Sibeko

An aircraft belonging to Botswana Defence Force (BDF) is seen at Sir Seretse Khama International Airport at the capital Gaborone, Botswana, September 19, 2018. Picture taken September 19,2018. REUTERS/Siphiwe Sibeko

Members of Botswana Defence Force (BDF) are seen at Kasane airport, Botswana, September 19, 2018. Picture taken September 19,2018. REUTERS/Siphiwe Sibeko

The marked carcass of an elephant is seen, after reports that conservationists have discovered 87 of them slaughtered just in the last few months, in the Mababe area, Botswana, September 19, 2018. Picture taken September 19,2018. REUTERS/Siphiwe Sibeko

Colonel George Bogatsu of Botswana Defence Force (BDF) walks after inspecting the carcass of an elephant, after reports that conservationists have discovered 87 of them slaughtered just in the last few months, in the Mababe area, Botswana, September 19, 2018. Picture taken September 19,2018. REUTERS/Siphiwe Sibeko

Anti poaching unit of Botswana Defence Force (BDF) react as they see the photographer in a wild life area outside Mababe, Botswana, September 19, 2018. Picture taken September 19, 2018. REUTERS/Siphiwe Sibeko TPX IMAGES OF THE DAY

Anti poaching unit of Botswana Defence Force (BDF) react as they see the photographer in a wild life area outside Mababe, Botswana, September 19, 2018. Picture taken September 19, 2018. REUTERS/Siphiwe Sibeko

A herd of elephants is seen grazing at a wild life area, after reports that conservationists have discovered 87 of them slaughtered just in the last few months, outside Kasane in the northeastern corner of Botswana, September 20, 2018. REUTERS/Siphiwe Sibeko

An aerial photograph shows a herd of buffalo at a wild life area in Botswana, September 20, 2018. REUTERS/Siphiwe Sibeko

A herd of elephants is seen grazing at a wild life area, after reports that conservationists have discovered 87 of them slaughtered just in the last few months, outside Kasane in the northeastern corner of Botswana, September 20, 2018. REUTERS/Siphiwe Sibeko

Members of Botswana Defence Force (BDF) look on ahead of taking off in a military aircraft in Maun, Botswana, September 20, 2018. REUTERS/Siphiwe Sibeko

A member of Botswana Defence Force (BDF) looks on ahead of taking off in a military aircraft in Maun, Botswana, September 20, 2018. REUTERS/Siphiwe Sibeko

An aerial photograph shows the carcass of an elephant, after reports that conservationists have discovered 87 of them slaughtered just in the last few months, in the Mababe area, Botswana, September 19, 2018. REUTERS/Siphiwe Sibeko TPX IMAGES OF THE DAY

A member of the military walks away after inspecting the carcass of an elephant, after reports that conservationists have discovered 87 of them slaughtered just in the last few months, in the Mababe area, Botswana, September 19, 2018. REUTERS/Siphiwe Sibeko

A Botswana military helicopter flies over a herd of elephants in the Mababe area, Botswana, September 19, 2018. REUTERS/Siphiwe Sibeko

A herd of elephants leaves a drinking spot in the Mababe area, Botswana, September 19, 2018. REUTERS/Siphiwe Sibeko

A member of the military inspects the carcass of an elephant, after reports that conservationists have discovered 87 of them slaughtered just in the last few months, in the Mababe area, Botswana, September 19, 2018. REUTERS/Siphiwe Sibeko

An aerial photograph shows the carcass of an elephant, after reports that conservationists have discovered 87 of them slaughtered just in the last few months, in the Mababe area, Botswana, September 19, 2018. REUTERS/Siphiwe Sibeko

Cabins are seen at the exclusive Meno a Kwena Lodge near Maun in the Okavango Delta, Botswana, April 24, 2018. Picture taken April 24, 2018. REUTERS/Mike Hutchings

Trees stand on islands as water begins to fill the Okavango Delta, Botswana, April 24, 2018. Picture taken April 24, 2018. REUTERS/Mike Hutchings