Russian Ambassador to China Andrey Denisov speaks next to Chinese professor Jia Qingguo, U.S. Ambassador to China Nicholas Burns, British Ambassador to China Caroline Wilson and French Ambassador to China Laurent Bili at the World Peace Forum at Tsinghua University in Beijing, China July 4, 2022. REUTERS/Yew Lun Tian 

U.S. Ambassador to China Nicholas Burns attends the World Peace Forum at Tsinghua University in Beijing, China July 4, 2022. REUTERS/Yew Lun Tian 

U.S. Ambassador to China Nicholas Burns speaks next to Russian Ambassador to China Andrey Denisov, Chinese professor Jia Qingguo, British Ambassador to China Caroline Wilson and French Ambassador to China Laurent Bili at the World Peace Forum at Tsinghua University in Beijing, China July 4, 2022. REUTERS/Yew Lun Tian 

Former ambassador to NATO Nicholas Burns shakes hands with U.S. Senator Ed Markey (D-MA), who introduced Burns, before giving his opening statement during the Senate Foreign Relations Committee hearing on his nomination to be the United States Ambassador to China, on Capitol Hill in Washington, U.S. October 20, 2021. REUTERS/Elizabeth Frantz 

Former ambassador to NATO Nicholas Burns gives his opening statement during the Senate Foreign Relations Committee hearing on his nomination to be the United States Ambassador to China, on Capitol Hill in Washington, U.S., October 20, 2021. REUTERS/Elizabeth Frantz 

Former ambassador to NATO Nicholas Burns takes his seat before giving his opening statement during the Senate Foreign Relations Committee hearing on his nomination to be the U.S. Ambassador to China, on Capitol Hill in Washington, U.S., October 20, 2021. REUTERS/Elizabeth Frantz 

Former ambassador to NATO Nicholas Burns gives his opening statement during the Senate Foreign Relations Committee hearing on his nomination to be the U.S. Ambassador to China, on Capitol Hill in Washington, U.S. October 20, 2021. REUTERS/Elizabeth Frantz 

Kween Johnson burns sage around a memorial for Daunte Wright at George Floyd Square on Juneteenth, which commemorates the end of slavery in Texas, two years after the 1863 Emancipation Proclamation freed slaves elsewhere in the United States, in Minneapolis, Minnesota, U.S., June 19, 2021. REUTERS/Nicholas Pfosi 

Minneapolis resident, Andrea Stoesz, cleans up outside the burned out bar Nuevo Rodeo across from the Minneapolis Police fifth precinct after the death in police custody of George Floyd in Minneapolis, Minnesota, U.S. May 31, 2020. REUTERS/Nicholas Pfosi 

Minneapolis resident, Andrea Stoesz, cleans up outside the burned out bar Nuevo Rodeo across from the Minneapolis Police fifth precinct after the death in police custody of George Floyd in Minneapolis, Minnesota, U.S. May 31, 2020. REUTERS/Nicholas Pfosi 

A pedestrian walks past a burned out Wells Fargo near the Minneapolis Police fifth precinct after the death in police custody of George Floyd in Minneapolis, Minnesota, U.S. May 31, 2020. REUTERS/Nicholas Pfosi 

A protester poses for a photo in front of a burning building near the fifth police precinct during the fourth day of protests after the killing of George Floyd in Minneapolis, Minnesota, U.S. May 29, 2020. Picture taken May 29, 2020. REUTERS/Nicholas Pfosi TPX IMAGES OF THE DAY 

Protesters pose for photos in front of a burning building near the fifth police precinct during the fourth day of protests after the killing of George Floyd in Minneapolis, Minnesota, U.S. May 29, 2020. Picture taken May 29, 2020. REUTERS/Nicholas Pfosi 

An onlooker takes a photo of a burned out building on Lake St during the fourth day of protests after the killing of George Floyd in Minneapolis, Minnesota, U.S. May 29, 2020. Picture taken May 29, 2020. REUTERS/Nicholas Pfosi 

A Rapid Recovery employee shovels ashes of the burned out car he is towing away from behind the Minneapolis Police third precinct, following Thursday night's demonstrations in response to the death of African-American man George Floyd in Minneapolis, Minnesota, U.S. May 29, 2020. REUTERS/Nicholas Pfosi 

Onlookers watch as an Arby's burns near the Minneapolis Police third precinct during the third day of demonstrations in response to the death of African-American man George Floyd in Minneapolis, Minnesota, U.S. May 28, 2020. REUTERS/Nicholas Pfosi 

Onlookers film as a rear window of the Minneapolis Police third precinct starts to burn during the third day of demonstrations in response to the death of African-American man George Floyd in Minneapolis, Minnesota, U.S. May 28, 2020. REUTERS/Nicholas Pfosi 

Demonstrators throw rocks at a burning Arby's near the Minneapolis Police third precinct during the third day of demonstrations in response to the death of African-American man George Floyd in Minneapolis, Minnesota, U.S. May 28, 2020. REUTERS/Nicholas Pfosi 

Protesters gather to watch a construction site burning near the Minneapolis Police third precinct after a white police officer was caught on a bystander's video pressing his knee into the neck of African-American man George Floyd, who later died at a hospital, in Minneapolis, Minnesota, U.S. May 27, 2020. Picture taken May 27, 2020. REUTERS/Nicholas Pfosi 

Protesters gather near the Minneapolis Police third precinct to watch a construction site burn after a white police officer was caught on a bystander's video pressing his knee into the neck of African-American man George Floyd, who later died at a hospital, in Minneapolis, Minnesota, U.S. May 28, 2020. REUTERS/Nicholas Pfosi 

Shortly after being initiated into the ShieldWall Network, a white nationalist group, new member Nicholas Holloway watches as a swastika is burned to celebrate Adolf Hitler's birthday outside Atkins, Arkansas, U.S., April 20, 2019. REUTERS/Jim Urquhart SEARCH "URQUHART NATIONALISM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. 

Robert Burns (L), a member of the environmental group 'Friends of the Detroit River', drives his boat along the Detroit River past Zug Island, along with Nicholas Schroeck, executive Director of Great Lakes Environmental Law Center, during an interview about The City of Detroit Water and Sewerage Wastewater Treatment Plant in Detroit, Michigan October 1, 2013. In bankruptcy and looking for cash, Detroit would like to lease its water utility to raise as much as $9 billion to fund basic services long term, but talks with neighboring suburban counties are stalled. Picture taken October 1. To match story USA-DETROIT/WATER REUTERS/Rebecca Cook (UNITED STATES - Tags: BUSINESS POLITICS ENVIRONMENT) 

Robert Burns (R) , a member of the environmental group 'Friends of the Detroit River', drives his boat along the Detroit River past Zug Island, along with Nicholas Schroeck, executive Director of Great Lakes Environmental Law Center, during an interview about The City of Detroit Water and Sewerage Wastewater Treatment Plant in Detroit, Michigan October 1, 2013. In bankruptcy and looking for cash, Detroit would like to lease its water utility to raise as much as $9 billion to fund basic services long term, but talks with neighboring suburban counties are stalled. Picture taken October 1. To match story USA-DETROIT/WATER REUTERS/Rebecca Cook (UNITED STATES - Tags: BUSINESS ENVIRONMENT POLITICS) 

A worker shovels coal into a steam engine as he prepares it for its route from Prague to London September 1, 2009. The historical train departed from Prague on Tuesday to re-trace the original route from Prague to London with several survivors and descendants of 669 so-called "Winton's children" on board. The "Winton's children" were rescued by Sir Nicholas Winton in 1939 from being sent to their deaths in Nazi concentration camps. REUTERS/Petr Josek (CZECH REPUBLIC SOCIETY POLITICS) 

Former U.S. Under Secretary of State Nicholas Burns smiles during a business meeting themed "India and the Crisis in South Asia" organised by the Federation of Indian Chambers of Commerce and Industry (FICCI) in New Delhi August 18, 2009. REUTERS/B Mathur (INDIA POLITICS) 

Former U.S. Under Secretary of State Nicholas Burns smiles during a business meeting themed "India and the Crisis in South Asia" organised by the Federation of Indian Chambers of Commerce and Industry (FICCI) in New Delhi August 18, 2009. REUTERS/B Mathur (INDIA POLITICS) 

Former U.S. Under Secretary of State Nicholas Burns speaks at a news conference at the Washington Institute for Near East Policy August 1, 2008. REUTERS/Jonathan Ernst (UNITED STATES) 

Israel's Deputy Prime Minister Shaul Mofaz (L) listens to former U.S. Under Secretary of State Nicholas Burns (R) at a news conference at the Washington Institute for Near East Policy August 1, 2008. REUTERS/Jonathan Ernst (UNITED STATES) 

U.S. Under Secretary of State Nicholas Burns is interviewed by Reuters at the U.S. State Department in Washington February 8, 2008. The United States sees no need "at all" for Iran to build additional nuclear power plants, Burns told Reuters on Friday. REUTERS/Susan Cornwell (UNITED STATES) 

Defence and foreign ministers from eight countries involved in the international coalition in southern Afghanistan meet at the British Army headquarters Edinburgh, December 14, 2007. (From L to R, back row) Canada's Maxime Bernier, Australia's Frances Adamson, Romania's Iulian Buga, Denmark's Lone Wisborg and Lars Johan Findsen, Canada's Peter Mackay, Australia's Joel Fitzgibbon, Romania's Corneliu Dobritoiu, Nicholas Burns of the U.S., Lord Malloch-Brown of the UK, Eimert van Middelkoop of the Netherlands, Robert Gates of the U.S., Des Browne of the UK and Estonia's Jaak Aaviksoo. REUTERS/Russell Cheyne (BRITAIN) 

Nicholas Burns, U.S. Undersecretary for Political Affairs, gestures during a news conference at the end of the Organization for Security and Co-operation in Europe (OSCE) ministerial meeting in Madrid November 30, 2007. REUTERS/Sergio Perez (SPAIN) 

Nicholas Burns, U.S. Undersecretary for Political Affairs, gestures during a news conference at the end of the Organization for Security and Co-operation in Europe (OSCE) ministerial meeting in Madrid November 30, 2007. REUTERS/Sergio Perez (SPAIN) 

Nicholas Burns, U.S. Undersecretary for Political Affairs, gestures during a news conference at the end of the Organization for Security and Co-operation in Europe (OSCE) ministerial meeting in Madrid November 30, 2007. REUTERS/Sergio Perez (SPAIN) 

Nicholas Burns, U.S. Undersecretary for Political Affairs, gestures during a news conference at the end of the Organization for Security and Co-operation in Europe (OSCE) ministerial meeting in Madrid November 30, 2007. REUTERS/Sergio Perez (SPAIN) 

U.S. Undersecretary for Political Affairs Nicholas Burns (R) talks to Spain's Foreign Minister Miguel Angel Moratinos at the start of the Organization for Security and Co-operation in Europe (OSCE) ministerial meeting in Madrid November 29, 2007. REUTERS/ Stringer (SPAIN) 

U.S. Undersecretary for Political Affairs Nicholas Burns (L) walks out after being greeted by Spain's Foreign Minister Miguel Angel Moratinos at the start of the Organization for Security and Co-operation in Europe (OSCE) ministerial meeting in Madrid November 29, 2007. REUTERS/Str (SPAIN) 

U.S. Undersecretary for Political Affairs Nicholas Burns gestures during a news conference ahead of The Organization for Security and Co-operation in Europe (OSCE) ministerial meeting in Madrid November 28, 2007. REUTERS/Sergio Perez (SPAIN) 

U.S. Undersecretary for Political Affairs Nicholas Burns gestures during a news conference ahead of The Organization for Security and Co-operation in Europe (OSCE) ministerial meeting in Madrid November 28, 2007. REUTERS/Sergio Perez (SPAIN) 

U.S. Undersecretary for Political Affairs Nicholas Burns gestures during a news conference ahead of The Organization for Security and Co-operation in Europe (OSCE) ministerial meeting in Madrid November 28, 2007. REUTERS/Sergio Perez (SPAIN) 

U.S. Undersecretary of State Nicholas Burns (C) and Sharon Weiner (L) of the U.S. Consulate in Istanbul listen to a tour guide at historic Suleymaniye mosque during their visit in Istanbul, September 18, 2007. REUTERS/Osman Orsal (TURKEY) 

U.S. Undersecretary of State Nicholas Burns (C) and Sharon Weiner (L) of the U.S. Consulate in Istanbul listen as Ekrem Nalbant, Imam of the historical Suleymaniye mosque, speaks during their visit in Istanbul, September 18, 2007. REUTERS/Osman Orsal (TURKEY) 

U.S. Undersecretary of State Nicholas Burns (C) and Sharon Weiner (L) of the U.S. Consulate in Istanbul listen as Ekrem Nalbant, Imam of the historical Suleymaniye mosque, speaks during their visit in Istanbul, September 18, 2007. REUTERS/Osman Orsal (TURKEY) 

Bank of Israel Governor Stanley Fischer (L) and U.S. Undersecretary of State Nicholas Burns attend a signing ceremony in Jerusalem August 16, 2007. The United States and Israel signed on Thursday a formal agreement under which Washington will provide it with $30 billion in defence aid over the next decade, a 25 percent increase over previous years. At a signing ceremony in Jerusalem, Burns pledged the United States would help Israel maintain a military advantage over its regional foes. REUTERS/Ronen Zvulun (JERUSALEM) 

Bank of Israel Governor Stanley Fischer (R) and U.S. Under secretary of State Nicholas Burns attend a signing ceremony in Jerusalem August 16, 2007. The United States and Israel signed on Thursday a formal agreement under which Washington will provide it with $30 billion in defence aid over the next decade, a 25 percent increase over previous years. At a signing ceremony in Jerusalem, Burns pledged the United States would help Israel maintain a military advantage over its regional foes. REUTERS/Ronen Zvulun (JERUSALEM) 

U.S. Undersecretary of State Nicholas Burns (L) walks with India's Foreign Secretary Shiv Shankar Menon before their meeting in New Delhi June 1, 2007. Burns arrived on Thursday for a three-day visit for talks on a landmark but controversial nuclear energy deal. REUTERS/B Mathur (INDIA) 

U.S. Undersecretary of State Nicholas Burns (C) shakes hands with India's Foreign Secretary Shiv Shankar Menon while U.S. Ambassador to India David C. Mulford (R) watches before their meeting in New Delhi June 1, 2007. Burns arrived on Thursday for a three-day visit for talks on a landmark but controversial nuclear energy deal. REUTERS/B Mathur (INDIA) 

U.S. Undersecretary of State Nicholas Burns (R) shakes hands with India's Foreign Secretary Shiv Shankar Menon before their meeting in New Delhi June 1, 2007. Burns arrived on Thursday for a three-day visit for talks on a landmark but controversial nuclear energy deal. REUTERS/B Mathur (INDIA) 

U.S. Undersecretary of State Nicholas Burns (R) shakes hands with India's Foreign Secretary Shiv Shankar Menon before their meeting in New Delhi June 1, 2007. Burns arrived on Thursday for a three-day visit for talks on a landmark but controversial nuclear energy deal. REUTERS/B Mathur (INDIA) 

U.S. Undersecretary of State Nicholas Burns smiles before his meeting with India's Foreign Secretary Shiv Shankar Menon in New Delhi June 1, 2007. Burns arrived on Thursday for a three-day visit for talks on a landmark but controversial nuclear energy deal. REUTERS/B Mathur (INDIA) 

U.S. Undersecretary of State Nicholas Burns gestures as he walks back after his meeting with India's Foreign Secretary Shiv Shankar Menon in New Delhi May 31, 2007. India and the United States are close to sewing up a landmark but controversial nuclear energy deal although some hard work needs to be done to bridge major differences, a top U.S. official said on Thursday. REUTERS/B Mathur (INDIA) 

U.S. Undersecretary of State Nicholas Burns (L) and U.S. Ambassador to India David C. Mulford walk back after their meeting with India's Foreign Secretary Shiv Shankar Menon in New Delhi May 31, 2007. India and the United States are close to sewing up a landmark but controversial nuclear energy deal although some hard work needs to be done to bridge major differences, a top U.S. official said on Thursday. REUTERS/B Mathur (INDIA) 

U.S. Undersecretary of States Nicholas Burns (R) shakes hands with Croatia's Prime Minister Ivo Sanader during their meeting in Zagreb May 11, 2007. REUTERS/Davor Kovacevic (CROATIA) 

U.S. Under Secretary for Political Affairs Nicholas Burns attends a meeting with Argentina's Cabinet Chief Alberto Fernandez (not pictured) at the Casa Rosada Presidential Palace in Buenos Aires February 9, 2007. Burns is in Argentina for a two-day official visit. REUTERS/Marcos Brindicci (ARGENTINA) 

U.S.Undersecretary for Political Affairs Nicholas Burns (L) is greeted by Brazil's Foreign Minister Celso Amorim as he arrives at Itamaraty Palace in Brasilia February 7, 2007. REUTERS/Jamil Bittar (BRAZIL) 

U.S.Undersecretary for Political Affairs Nicholas Burns (L) talks with Brazil's Foreign Minister Celso Amorim at Itamaraty Palace in Brasilia, February 7, 2007. REUTERS/Jamil Bittar (BRAZIL) 

U.S.Undersecretary for Political Affairs Nicholas Burns looks at the gallery of portraits of past foreign ministers inside Itamaraty Palace as he waits to meet with Brazilian authorities, in Brasilia, February 7, 2007. REUTERS/Jamil Bittar (BRAZIL) 

U.S.Undersecretary for Political Affairs Nicholas Burns arrives at Itamaraty Palace in Brasilia, February 7, 2007.REUTERS/Jamil Bittar (BRAZIL) 

U.S. Undersecretary of State for Political Affairs Nicholas Burns attends a wreath-laying ceremony at the mausoleum of Ataturk, founder of modern Turkey, in Ankara January 19, 2007. REUTERS/Umit Bektas (TURKEY) 

U.S. Undersecretary of State for Political Affairs Nicholas Burns addresses the media after a meeting with Turkey's Prime Minister Tayyip Erdogan in Ankara, January 18, 2007. REUTERS/Umit Bektas (TURKEY) 

U.S. Undersecretary of State Nicholas Burns gestures during a discussion in Berlin in this September 8, 2006 file photo. Europe, Russia and China should follow the U.S. lead and take other measures beyond recently enacted U.N. sanctions to pressure Iran to abandon its nuclear program, including curbing arms sales and trade credits, Burns said on January 13, 2007. REUTERS/Arnd Wiegmann/Files (GERMANY)