President Trump is facing the biggest pressure of his young presidency over an allegation that he pressured the FBI director to end an investigation. Saul Loeb/AFP/Getty Images hide caption

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Saul Loeb/AFP/Getty Images

A supporter cries during a rally opposing President Park Geun-hye's impeachment near the Constitutional Court in Seoul, South Korea, on Friday. Ahn Young-joon/AP hide caption

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Ahn Young-joon/AP

South Korean President's Impeachment Triggers Clashes And Questions

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South Korean President Park Geun-hye is shown during a Nov. 29 televised address. The country's first female leader was impeached on Friday. AP hide caption

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AP

South Korean Lawmakers Vote Overwhelmingly To Impeach President

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South Korean President Park Geun-Hye bows during an address to the nation, at the presidential Blue House in Seoul last month. Park said she is willing to stand down early and would let parliament decide on her fate. Pool/Getty Images hide caption

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Pool/Getty Images

Vote To Impeach South Korea's President Expected This Week

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People supporting impeachment of Brazilian President Dilma Rousseff demonstrate in front of Planalto Palace in Brasilia on Tuesday. Brazil's Senate is voting Wednesday on whether to impeach Rousseff, who is accused of using accounting tricks and unauthorized state loans to boost public spending during her 2014 re-election campaign. Vanderlei Almeida/AFP/Getty Images hide caption

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Vanderlei Almeida/AFP/Getty Images

Vice President Temer Would Lead Brazil If The President Is Impeached

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President Obama waves before boarding Air Force One prior to his departure from Andrews Air Force Base on June 26. Jose Luis Magana/AP hide caption

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Jose Luis Magana/AP

Like Clockwork, Impeachment Talk Surfaces — But Action's Unlikely

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Lt. Gov. Mark Darr and his wife Kim give an interview at the Arkansas Capitol building on Monday. After weeks of pressure to step down from both sides of the aisle, Darr announced his resignation on Friday. Danny Johnston/AP hide caption

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Danny Johnston/AP

Michigan Rep. Kerry Bentivolio listens at a Nov. 4, 2012, rally in Livonia, Mich. The suburban Detroit congressman has said it would be a "dream come true" to seek the impeachment of President Obama. Paul Sancya/AP hide caption

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Paul Sancya/AP