Britain's Prince Charles lays a wreath after observing a two-minute silence to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Charles, Prince of Wales and Camilla, Duchess of Cornwall (known as the Duke and Duchess of Rothesay when in Scotland), depart after a ceremony to mark 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Charles, Prince of Wales and Camilla, Duchess of Cornwall (known as the Duke and Duchess of Rothesay when in Scotland), look after laying wreaths to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Charles, Prince of Wales and Camilla, Duchess of Cornwall (known as the Duke and Duchess of Rothesay when in Scotland), look on after laying wreaths to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Charles, Prince of Wales and Camilla, Duchess of Cornwall (known as the Duke and Duchess of Rothesay when in Scotland), look after laying wreaths to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Camilla, Duchess of Cornwall (known as the Duchess of Rothesay when in Scotland), lays a wreath to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Prince Charles (known as the Duke of Rothesay when in Scotland) carries a wreath to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Prince Charles (known as the Duke of Rothesay when in Scotland) carries a wreath to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Camilla, Duchess of Cornwall (known as the Duchess of Rothesay when in Scotland), lays a wreath to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Prince Charles (known as the Duke of Rothesay when in Scotland) lays a wreath to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Prince Charles (known as the Duke of Rothesay when in Scotland) reacts after laying a wreath to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Prince Charles (known as the Duke of Rothesay when in Scotland) stands after laying a wreath to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Prince Charles (known as the Duke of Rothesay when in Scotland) lays a wreath after observing a two-minute silence to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Charles, Prince of Wales and Camilla, Duchess of Cornwall (known as the Duke and Duchess of Rothesay when in Scotland), arrive to observe a two-minute silence to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Charles, Prince of Wales and Camilla, Duchess of Cornwall (known as the Duke and Duchess of Rothesay when in Scotland), observe a two-minute silence to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Charles, Prince of Wales and Camilla, Duchess of Cornwall (known as the Duke and Duchess of Rothesay when in Scotland), observe a two-minute silence to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Charles, Prince of Wales and Camilla, Duchess of Cornwall (known as the Duke and Duchess of Rothesay when in Scotland), walk to take part in a two-minute silence to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Britain's Charles, Prince of Wales and Camilla, Duchess of Cornwall (known as the Duke and Duchess of Rothesay when in Scotland), walk to take part in a two-minute silence to mark the 75th anniversary of VE Day at the Balmoral War Memorial, Scotland, Britain May 8, 2020. Amy Muir/Pool via REUTERS

Holocaust and genocide survivors: Eva Clarke BEM, Var Ashe Houston, Daniela Abraham , Manfred Goldberg BEM, Mala Tribich MBE, Arek Hersh MBE, Yvonne Bernstein, Appolinaire Kageruka, Ernest Simon, Dzemal Paratusic and Isam Agieb light candles during the UK Holocaust Memorial Day Commemorative Ceremony in Westminster in London, Britain January 27, 2020. Chris Jackson/Pool via REUTERS TPX IMAGES OF THE DAY

Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville

Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville

Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville

Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville

Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville TPX IMAGES OF THE DAY

Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville

Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville

Deer clash as they fight during the rutting season in Richmond Park, west London, Britain, October 27, 2019. REUTERS/Toby Melville

A man blows a vuvuzela during a pro-Kurdish rally against Turkey's military action in northeastern Syria, in London, Britain, October 13, 2019. REUTERS/Henry Nicholls

A woman waves a Kurdish flag during a pro-Kurdish rally against Turkey's military action in northeastern Syria, in London, Britain, October 13, 2019. REUTERS/Henry Nicholls

People take part in a pro-Kurdish rally against Turkey's military action in northeastern Syria, in London, Britain, October 13, 2019. REUTERS/Henry Nicholls

A woman holds a placard as she takes part in a pro-Kurdish rally against Turkey's military action in northeastern Syria, in London, Britain, October 13, 2019. REUTERS/Henry Nicholls

People shout as they take part in a pro-Kurdish rally against Turkey's military action in northeastern Syria, in London, Britain, October 13, 2019. REUTERS/Henry Nicholls

People take part in a pro-Kurdish rally against Turkey's military action in northeastern Syria, in London, Britain, October 13, 2019. REUTERS/Henry Nicholls

A woman flashes a V-sign as she waves a Kurdish flag during a pro-Kurdish rally against Turkey's military action in northeastern Syria, in London, Britain, October 13, 2019. REUTERS/Henry Nicholls TPX IMAGES OF THE DAY

A man blows a vuvuzela during a pro-Kurdish rally against Turkey's military action in northeastern Syria, in London, Britain, October 13, 2019. REUTERS/Henry Nicholls

A man holds a flag during a pro-Kurdish rally against Turkey's military action in northeastern Syria, in London, Britain, October 13, 2019. REUTERS/Henry Nicholls

People take part in a pro-Kurdish rally against Turkey's military action in northeastern Syria, in London, Britain, October 13, 2019. REUTERS/Henry Nicholls

People take part in a pro-Kurdish rally against Turkey's military action in northeastern Syria, in London, Britain, October 13, 2019. REUTERS/Henry Nicholls

Iranian oil tanker Grace 1 sits anchored after it was seized in July by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain, August 13, 2019. REUTERS/Jon Nazca

Iranian oil tanker Grace 1 sits anchored after it was seized in July by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain, August 13, 2019. REUTERS/Jon Nazca

Gibraltar defence police officers guard the Iranian oil tanker Grace 1 as it sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

A British Royal Navy patrol vessel guards the Iranian oil tanker Grace 1 as it sits anchored anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

A Panama flag flies on the stern of the Iranian oil tanker Grace 1 as it sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

A crew member of the Iranian oil tanker Grace 1 is seen on the stern as it sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

A crew member of the Iranian oil tanker Grace 1 is seen on the stern as it sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

Iranian oil tanker Grace 1 sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

Iranian oil tanker Grace 1 sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

Iranian oil tanker Grace 1 sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

Iranian oil tanker Grace 1 sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

A Royal Gibraltar Police's boat guards the Iranian oil tanker Grace 1 as it sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

A Royal Gibraltar Police's boat guards the Iranian oil tanker Grace 1 as it sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

A crew member of the Iranian oil tanker Grace 1 is seen on the bow as it sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

Crew members of the Iranian oil tanker Grace 1 are seen on the stern as it sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

Crew members of the Iranian oil tanker Grace 1 are seen on the stern as it sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

Iranian oil tanker Grace 1 sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

Dolphins swim in front of the Iranian oil tanker Grace 1 as it sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

Dolphins swim in front of the Iranian oil tanker Grace 1 as it sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

Iranian oil tanker Grace 1 sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

Iranian oil tanker Grace 1 sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca

Iranian oil tanker Grace 1 sits anchored after it was seized earlier this month by British Royal Marines off the coast of the British Mediterranean territory on suspicion of violating sanctions against Syria, in the Strait of Gibraltar, southern Spain July 20, 2019. REUTERS/Jon Nazca