Inmates participate in a boxing tournament under the slogan "With boxing gloves against drugs and aggression" at Sofia central prison, Bulgaria, April 23, 2019.

Chinese Navy's destroyer Taiyuan takes part in a naval parade off the eastern port city of Qingdao, to mark the 70th anniversary of the founding of Chinese People's Liberation Army Navy, China, April 23, 2019. REUTERS/Jason Lee

Nadia Murad and Amal Clooney react at the United Nations Security Council during a meeting about sexual violence in conflict in New York, New York, U.S., April 23, 2019.

Demonstrators and police confront each other during anti government protests in Algiers, Algeria April 23, 2019.

Models pose backstage before Lenny Niemeyer show during Sao Paulo Fashion Week in Sao Paulo, Brazil, April 23, 2019.

Asian Athletics Championships - Khalifa International Stadium, Doha, Qatar - April 23, 2019 Japan's Yukari Ishizawa in action during the women's 3000m Steeplechase final

U.S. Democratic presidential candidate Andrew Yang hoists a supporter's sign after speaking at a rally in downtown Los Angeles, California, U.S., April 22, 2019.

A worker throws a cloth during a drying process at Sukoharjo near Solo, Central Java province, Indonesia, April 23, 2019 in this photo taken by Antara Foto.

Students learn to recite the Koran at Mohammed VI Institute for training Imams in Rabat, Morocco April 16, 2019. Picture taken April 16, 2019.

Democratic 2020 U.S. presidential candidate and U.S. Senator Kamala Harris (D-CA) takes the stage for a campaign stop at Keene State College in Keene, New Hampshire, U.S., April 23, 2019.

Firefighters tackle a fire on a patch of moorland above the village of Uppermill, Britain, April 22, 2019.

A rescuer carries a search dog as they try to reach survivors at a collapsed four-storey building following an earthquake in Porac town, Pampanga province, Philippines, April 23, 2019.

India's Prime Minister Narendra Modi shows his ink-marked finger after casting his vote outside a polling station during the third phase of general election in Ahmedabad, India, April 23, 2019.

A train carrying protesters from Atbara, the birthplace of an uprising that toppled Sudan's former President Omar al-Bashir, approaches to a train station as part of a symbolic gesture of support for demonstrators camped at a sit-in outside the defence ministry compound, in Khartoum, Sudan, April 23, 2019.

Soccer Football - Egyptian Premier League - Pyramids FC v Zamalek - 30 June Air Defense Stadium, Cairo, Egypt - April 23, 2019 General view of a clash after the match

North Korean leader Kim Jong Un departs to visit Russia at undisclosed location in this undated photo released on April 23, 2019 by North Korea's Central News Agency (KCNA).

Cast member Brie Larson poses with fans on the red carpet at the world premiere of the film "The Avengers: Endgame" in Los Angeles, California, April 22, 2019.