Supporters of Cameroonian President Paul Biya's party, the Cameroon People's Democratic Movement, walk through Bongo Square under the watch of a gendarme in Buea, Cameroon, on Oct. 3, 2018.
U.S. Secretary of State Mike Pompeo speaks about attacks on oil tankers in the Gulf of Oman that the United States blamed on Iran in Washington on June 13, 2019.
Soviet leader Mikhail Gorbachev and U.S. President Ronald Reagan sign a landmark treaty eliminating U.S. and Soviet intermediate-range and shorter-range nuke missiles in Washington in December 1987.
U.S. President Donald Trump looks over at Crown Prince of Saudi Arabia Mohammed bin Salman during the opening day of the G-20 Leaders' Summit 2018 in Buenos Aires on Nov. 30, 2018.
Mohamed Hamdan Dagalo, also known as Hemeti, the de facto military ruler of Sudan, gives a speech in the village of Qarri, north of Khartoum, on June 15.
U.S. President Donald Trump speaks to the media during a meeting with Pakistani Prime Minister Imran Khan in the Oval Office at the White House in Washington on July 22.
