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Tunisians hold flags during a demonstration in solidarity with Prime Minister Youssef Chahed in his fight against corruption, May 26, 2017 (FETHI BELAID/AFP/Getty Images)

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Russian President Vladimir Putin at the Tomb of the Unknown Soldier, Moscow, Russia, May 9, 2015 (Host photo agency / RIA Novosti via Getty Images)

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Fentanyl on display at the State Crime Lab at the Ohio Attorney General's headquarters of the Bureau of Criminal Investigation, September 16, 2015 in London, Ohio. (Ty Wright for The Washington Post via Getty Images)

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(John Lamb/Getty Images)

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(L) General Douglas MacArthur signs the formal surrender on the USS Missouri in Tokyo Bay, September 2, 1945 (US Navy/Released) (R) Chinese communist guerrilla leader Mao Tse-Tung, November 12, 1944. (Fox Photos/Getty Images)