Argentina's Health Minister Carla Vizzotti (C), Chief of cabinet Santiago Cafiero (R), and China's Ambassador to Argentina Zou Xiaoli (L) watch as a shipment of 900,000 doses of Sinovac coronavirus disease (COVID-19) vaccine arrives from China at Ezeiza International Airport, in Buenos Aires, Argentina, February 25, 2021. REUTERS/Agustin Marcarian

Argentina's Health Minister Carla Vizzotti (C), Chief of cabinet Santiago Cafiero (R), and China's Ambassador to Argentina Zou Xiaoli (L) watch as a shipment of 900,000 doses of Sinovac coronavirus disease (COVID-19) vaccine arrives from China at Ezeiza International Airport, in Buenos Aires, Argentina, February 25, 2021. REUTERS/Agustin Marcarian

New US Ambassador to the United Nations, Linda Thomas-Greenfield speaks after meeting with UN Secretary-General Antonio Guterres at the United Nations in New York City, U.S. February 25, 2021. Angela Weiss/Pool via REUTERS

New US Ambassador to the United Nations, Linda Thomas-Greenfield arrives to speak after meeting with UN Secretary-General Antonio Guterres at the United Nations in New York City, U.S. February 25, 2021. Angela Weiss/Pool via REUTERS

New US Ambassador to the United Nations, Linda Thomas-Greenfield arrives to speak after meeting with UN Secretary-General Antonio Guterres at the United Nations in New York City, U.S. February 25, 2021. Angela Weiss/Pool via REUTERS

New US Ambassador to the United Nations, Linda Thomas-Greenfield arrives to speak after meeting with UN Secretary-General Antonio Guterres at the United Nations in New York City, U.S. February 25, 2021. Angela Weiss/Pool via REUTERS

New US Ambassador to the United Nations, Linda Thomas-Greenfield removes her face mask to speak after meeting with UN Secretary-General Antonio Guterres at the United Nations in New York City, U.S. February 25, 2021. Angela Weiss/Pool via REUTERS

New US Ambassador to the United Nations, Linda Thomas-Greenfield removes her face mask to speak after meeting with UN Secretary-General Antonio Guterres at the United Nations in New York City, U.S. February 25, 2021. Angela Weiss/Pool via REUTERS

New US Ambassador to the United Nations, Linda Thomas-Greenfield speaks after meeting with UN Secretary-General Antonio Guterres at the United Nations in New York City, U.S. February 25, 2021. Angela Weiss/Pool via REUTERS

New US Ambassador to the United Nations, Linda Thomas-Greenfield speaks after meeting with UN Secretary-General Antonio Guterres at the United Nations in New York City, U.S. February 25, 2021. Angela Weiss/Pool via REUTERS

New US Ambassador to the United Nations, Linda Thomas-Greenfield speaks after meeting with UN Secretary-General Antonio Guterres at the United Nations in New York City, U.S. February 25, 2021. Angela Weiss/Pool via REUTERS

New US Ambassador to the United Nations, Linda Thomas-Greenfield speaks after meeting with UN Secretary-General Antonio Guterres at the United Nations in New York City, U.S. February 25, 2021. Angela Weiss/Pool via REUTERS

New US Ambassador to the United Nations, Linda Thomas-Greenfield speaks after meeting with UN Secretary-General Antonio Guterres at the United Nations in New York City, U.S. February 25, 2021. Angela Weiss/Pool via REUTERS

New US Ambassador to the United Nations, Linda Thomas-Greenfield speaks after meeting with UN Secretary-General Antonio Guterres at the United Nations in New York City, U.S. February 25, 2021. Angela Weiss/Pool via REUTERS

New US Ambassador to the United Nations, Linda Thomas-Greenfield speaks after meeting with UN Secretary-General Antonio Guterres at the United Nations in New York City, U.S. February 25, 2021. Angela Weiss/Pool via REUTERS

New US Ambassador to the United Nations, Linda Thomas-Greenfield speaks after meeting with UN Secretary-General Antonio Guterres at the United Nations in New York City, U.S. February 25, 2021. Angela Weiss/Pool via REUTERS

New U.S. Ambassador to the United Nations, Linda Thomas-Greenfield presents her credentials to U.N. Secretary General Antonio Guterres at U.N. headquarters in New York, U.S., February 25, 2021. REUTERS/Mike Segar/Pool

New U.S. Ambassador to the United Nations, Linda Thomas-Greenfield gestures after making a statement to the media following the presentation of her credentials at U.N. headquarters in New York, U.S., February 25, 2021. REUTERS/Mike Segar

New U.S. Ambassador to the United Nations, Linda Thomas-Greenfield gestures after making a statement to the media following the presentation of her credentials at U.N. headquarters in New York, U.S., February 25, 2021. REUTERS/Mike Segar

New U.S. Ambassador to the United Nations, Linda Thomas-Greenfield arrives to present her credentials to U.N. Secretary General Antonio Guterres at U.N. headquarters in New York, U.S., February 25, 2021. REUTERS/Mike Segar

New U.S. Ambassador to the United Nations, Linda Thomas-Greenfield walks with U.N. Secretary General Antonio Guterres to a meeting after presenting her credentials at U.N. headquarters, with Deputy U.S. U.N. Ambassador Richard Mills, in New York, U.S., February 25, 2021. REUTERS/Mike Segar

New U.S. Ambassador to the United Nations, Linda Thomas-Greenfield walks with U.N. Secretary General Antonio Guterres to a meeting after presenting her credentials at U.N. headquarters in New York, U.S., February 25, 2021. REUTERS/Mike Segar

New U.S. Ambassador to the United Nations, Linda Thomas-Greenfield looks to an aide while presenting her credentials to U.N. Secretary General Antonio Guterres at U.N. headquarters in New York, U.S., February 25, 2021. REUTERS/Mike Segar

New U.S. Ambassador to the United Nations, Linda Thomas-Greenfield arrives to present her credentials to U.N. Secretary General Antonio Guterres at U.N. headquarters in New York, U.S., February 25, 2021. REUTERS/Mike Segar

New U.S. Ambassador to the United Nations, Linda Thomas-Greenfield walks with U.N. Secretary General Antonio Guterres to a meeting after presenting her credentials at U.N. headquarters in New York, U.S., February 25, 2021. REUTERS/Mike Segar

New U.S. Ambassador to the United Nations, Linda Thomas-Greenfield walks with U.N. Secretary General Antonio Guterres to a meeting after presenting her credentials at U.N. headquarters in New York, U.S., February 25, 2021. REUTERS/Mike Segar

New U.S. Ambassador to the United Nations, Linda Thomas-Greenfield walks with U.N. Secretary General Antonio Guterres to a meeting after presenting her credentials at U.N. headquarters, with Deputy U.S. U.N. Ambassador Richard Mills looking on, in New York, U.S., February 25, 2021. REUTERS/Mike Segar

New U.S. Ambassador to the United Nations, Linda Thomas-Greenfield presents her credentials to U.N. Secretary General Antonio Guterres at U.N. headquarters in New York, U.S., February 25, 2021. REUTERS/Mike Segar

New U.S. Ambassador to the United Nations, Linda Thomas-Greenfield presents her credentials to U.N. Secretary General Antonio Guterres at U.N. headquarters in New York, U.S., February 25, 2021. REUTERS/Mike Segar

New U.S. Ambassador to the United Nations, Linda Thomas-Greenfield presents her credentials to U.N. Secretary General Antonio Guterres at U.N. headquarters in New York, U.S., February 25, 2021. REUTERS/Mike Segar

New U.S. Ambassador to the United Nations, Linda Thomas-Greenfield presents her credentials to U.N. Secretary General Antonio Guterres at U.N. headquarters in New York, U.S., February 25, 2021. REUTERS/Mike Segar

Guatemalan Foreign Minister Pedro Brolo and Israel Ambassador to Guatemala Mattanya Cohen attend a ceremony after the arrival of a batch of the Moderna coronavirus disease (COVID-19) vaccines at the Guatemalan Air Force base in Guatemala City, Guatemala February 25, 2021. REUTERS/Luis Echeverria

Katherine C. Tai packs up while husband Robert Skidmore waits behind her after the Senate Finance committee hearings to examine her nomination to be United States Trade Representative, with the rank of Ambassador, in Washington, DC February 25, 2021. Bill O'Leary/Pool via REUTERS

Katherine C. Tai bumps limbs with Senator Mike Crapo (R-ID) and committee chairman Ron Wyden (D-OR) after the Senate Finance committee hearing to examine her nomination to be United States Trade Representative, with the rank of Ambassador, in Washington, DC February 25, 2021. Bill O'Leary/Pool via REUTERS

Katherine C. Tai listens to questioning during the Senate Finance committee hearings to examine her nomination to be United States Trade Representative, with the rank of Ambassador, in Washington, DC February 25, 2021. Bill O'Leary/Pool via REUTERS

Katherine C. Tai takes her seat for the Senate Finance committee hearings to examine her nomination to be United States Trade Representative, with the rank of Ambassador, in Washington, DC February 25, 2021. Bill O'Leary/Pool via REUTERS

Katherine C. Tai addresses the Senate Finance committee hearings to examine her nomination to be United States Trade Representative, with the rank of Ambassador, in Washington, DC February 25, 2021. Bill O'Leary/Pool via REUTERS

Katherine C. Tai addresses the Senate Finance committee hearings to examine her nomination to be United States Trade Representative, with the rank of Ambassador, in Washington, DC February 25, 2021. Bill O'Leary/Pool via REUTERS

Katherine C. Tai looks on during the Senate Finance committee hearings to examine her nomination to be United States Trade Representative, with the rank of Ambassador, in Washington, DC February 25, 2021. Bill O'Leary/Pool via REUTERS

Katherine C. Tai addresses the Senate Finance committee hearings to examine her nomination to be United States Trade Representative, with the rank of Ambassador, in Washington, DC February 25, 2021. Bill O'Leary/Pool via REUTERS

Katherine C. Tai listens as Rep. Kevin Brady (R-TX) recommends her during the Senate Finance committee hearings to examine her nomination to be United States Trade Representative, with the rank of Ambassador, in Washington, DC February 25, 2021. Bill O'Leary/Pool via REUTERS

Katherine C. Tai of the District of Columbia, with her are her husband and mother, greets Sen. Tom Carper (D-DE) before the Senate Finance committee hearings to examine her nomination to be United States Trade Representative, with the rank of Ambassador, in Washington, DC February 25, 2021. Bill O'Leary/Pool via REUTERS

Senate Finance committee hearing to examine the nomination of Katherine C. Tai, pictured testifying, of the District of Columbia, to be United States Trade Representative, with the rank of Ambassador, in Washington, DC February 25, 2021. Bill O'Leary/Pool via REUTERS

A Carabinieri officer hugs one of the three daughters of the Italian ambassador Luca Attanasio, who was killed with his bodyguard Vittorio Iacovacci in an attack in the Democratic Republic of Congo, after their funeral in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

One of the two coffins containing the bodies of the Italian ambassador Luca Attanasio and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, is carried by Carabinieri officers outside Santa Maria degli Angeli church after their funeral, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

Zakia Seddiki, wife of the Italian ambassador Luca Attanasio, walks outside Santa Maria degli Angeli church after the funeral of her husband and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

Carabinieri officers carry one of the two coffins containing the bodies of the Italian ambassador Luca Attanasio and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, outside Santa Maria degli Angeli church after their funeral, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

A Carabinieri officer hugs one of the three daughters of the Italian ambassador Luca Attanasio, who was killed with his bodyguard Vittorio Iacovacci in an attack in the Democratic Republic of Congo, after their funeral in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

A Carabinieri officer reacts outside Santa Maria degli Angeli church after the funeral of the Italian ambassador Luca Attanasio and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

One of the two coffins containing the bodies of the Italian ambassador Luca Attanasio and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, is carried by Carabinieri officers outside Santa Maria degli Angeli church after their funeral, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

Italian Prime Minister Mario Draghi is seen outside Santa Maria degli Angeli church after the funeral of the Italian ambassador Luca Attanasio and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

The coffins containing the bodies of the Italian ambassador Luca Attanasio and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, are carried by Carabinieri officers into Santa Maria degli Angeli church for their funeral, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

One of the two coffins containing the bodies of the Italian ambassador Luca Attanasio and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, is carried by Carabinieri officers into Santa Maria degli Angeli church before their funeral, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

One of the two coffins containing the bodies of the Italian ambassador Luca Attanasio and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, is carried by Carabinieri officers into Santa Maria degli Angeli church before their funeral, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

One of the two coffins containing the bodies of the Italian ambassador Luca Attanasio and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, is carried by Carabinieri officers into Santa Maria degli Angeli church before their funeral, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

One of the two coffins containing the bodies of the Italian ambassador Luca Attanasio and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, is carried by Carabinieri officers into Santa Maria degli Angeli church before their funeral, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

The coffins containing the bodies of the Italian ambassador Luca Attanasio and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, are carried by Carabinieri officers into Santa Maria degli Angeli church for their funeral, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

Italian Foreign Minister Luigi Di Maio waves as he enters Santa Maria degli Angeli church for the funeral of the Italian ambassador Luca Attanasio and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

Italian Prime Minister Mario Draghi enters Santa Maria degli Angeli church for the funeral of the Italian ambassador Luca Attanasio and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

Italian Speaker of the upper house Maria Elisabetta Alberti Casellati enters Santa Maria degli Angeli church for the funeral of the Italian ambassador Luca Attanasio and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi