HIROSHIMA: Ukrainian President Volodymyr Zelensky, back center, joins Group of Seven leaders during their summit in Hiroshima, Japan, on Sunday, May 21. Zelensky pressed the group to remain united against Russian aggression (Stefan Rousseau/Pool/AFP/Getty Images)

LONDON: Police in London work at the scene after a car was driven at the gates of Downing Street, the official residence of the UK prime minister, on Thursday, May 25. A man was arrested and there were no reports of any injuries (Alastair Grant/AP)

KUSNACHT: People in Küsnacht, Switzerland, take pictures outside the estate of late singer Tina Turner on Thursday, May 25. Turner, who rose from humble beginnings and overcame a notoriously abusive marriage to become one of the most popular female artists of all time, died this week at the age of 83 (Fabrice Coffrini/AFP/Getty Images)

CAPE CANAVERAL: A SpaceX rocket, carrying a former NASA astronaut and three paying customers, takes off from the Kennedy Space Center in Cape Canaveral, Florida, on Sunday, May 21. The crew was set for a weeklong stay aboard the International Space Station. It's the second all-private mission to the orbiting outpost (John Raoux/AP)

CANNES: A protester, wearing a dress in the colors of the Ukrainian flag, is detained by security after she covered herself in fake blood at the Cannes Film Festival in France on Sunday, May 21.(Christophe Simon/AFP/Getty Images)

ROME: Tennis pro Borna Coric is reflected in a glass barrier as he returns the ball during a match at the Italian Open in Rome on Sunday, May 21.(Andrew Medichini/AP)

MEXICO: Ash and smoke billow from Mexico's Popocatepetl volcano on Thursday, May 25. The volcano, about 45 miles from Mexico City, has been spewing ash into several nearby towns since last week, according to authorities (Claudio Cruz/AFP/Getty Images)

RIO DE JANEIRO: Artists from the CIA Base vertical dance and aerial circus group perform during the International Circus Festival in Rio de Janeiro on Sunday, May 21.(Bruna Prado/AP)

NAVI MUMBAI: Flamingos stand in a pond in Navi Mumbai, India, on Sunday, May 22 (Punit Paranjpe/AFP/Getty Images)

DONETSK: Two Ukrainian servicemen repair an engine on an infantry fighting vehicle in the country's Donetsk region on Monday, May 22 (Justin Yau/Sipa USA/AP)