An instructor at Fort Leonard Wood, Mo., carries VX nerve agent inside a special chamber used for training in 2003. Brendan Smialowski/Getty Images hide caption

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Brendan Smialowski/Getty Images

VX: The Nerve Agent Used To Kill Kim Jong Nam Is Rare And Deadly

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Burned, twisted metal from motorcycles covered an area where a suicide attacker blew up his small pickup truck outside a security office on Friday in the village of Sousian in northern Syria. AP hide caption

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AP

TV screens in Seoul, South Korea, show images Wednesday of Kim Jong Nam, the half-brother of North Korean leader Kim Jong Un. Ahn Young-joon/AP hide caption

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Ahn Young-joon/AP

Chemical Weapon Found On Body Of North Korean Leader's Half-Brother

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Secretary of State Rex Tillerson (from left), Mexican Foreign Minister Luis Videgaray and Mexican Interior Minister Miguel Angel Osorio Chong greet each other during a news conference in Mexico City on Thursday. Ronaldo Schemidt/AFP/Getty Images hide caption

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Ronaldo Schemidt/AFP/Getty Images

Iraqi forces gather at Mosul's airport during an offensive to retake the western side of the city from ISIS Thursday. Government forces reportedly entered the airport on the southern edge of the city for the first time since 2014. Ahmad Al-Rubaye/AFP/Getty Images hide caption

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Ahmad Al-Rubaye/AFP/Getty Images

Sen. John McCain, R-Ariz., speaks during the Munich Security Conference last week. McCain's office has confirmed that while he was overseas, he met with U.S. forces in Syria about defeating ISIS. Matthias Schrader/AP hide caption

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Matthias Schrader/AP

Cressida Dick, who worked for Scotland Yard for 31 years before leaving to work for Britain's Foreign Office, has been named the new commissioner of London's Metropolitan Police Service, the first woman to lead Scotland Yard in its 188-year history. Charlotte Ball/AP hide caption

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Charlotte Ball/AP

Royal Malaysian Police Chief Khalid Abu Bakar addresses journalists in front of a screen displaying the details of North Korean Embassy staffer Hyon Kwong Song, who has been identified for questioning, during a press conference at the Bukit Aman police headquarters in Kuala Lumpur. Manan Vatsyayana/AFP/Getty Images hide caption

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A World Food Program food distribution site in Bentiu, South Sudan. The U.N. says nearly 5 million people in the country do not have enough food, and in one region people are already dying of starvation. Kate Holt/AP hide caption

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Kate Holt/AP

In South Sudan, People Are Dying Of Hunger As Civil War Continues

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Smoke and flames rise after a Beechcraft plane crashed into a shopping center after it took off from Essendon Airport in suburban Melbourne, Australia. Jordan Fouracre/AFP/Getty Images hide caption

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Jordan Fouracre/AFP/Getty Images

Shootings by Customs and Border Patrol agents along the U.S.-Mexico border have been the subject of investigations in the past, but on Tuesday the Supreme Court will hear arguments in a case asking whether families have any right to sue when a shooting occurred on Mexican soil. Russell Contreras/AP hide caption

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Russell Contreras/AP

Speaking at NATO headquarters Monday, Vice President Pence addressed the ousting of Michael Flynn and attempted to assuage fears that the United States might not uphold its commitments to NATO under President Trump. Emmanuel Dunand/AFP/Getty Images hide caption

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Emmanuel Dunand/AFP/Getty Images

Defense Secretary Jim Mattis seems to be aiming to reassure U.S. allies while overseas. Ahead of an unannounced visit to Iraq, Mattis rejected President Trump's statements that the U.S. should have seized Iraqi oil after the invasion. Susan Walsh/AP hide caption

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Susan Walsh/AP

President Trump speaks during his campaign-style rally at Orlando Melbourne International Airport in Florida on Saturday. Joe Raedle/Getty Images hide caption

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Joe Raedle/Getty Images

Trump Says, 'Look What's Happening In Sweden.' Sweden Asks, 'Wait, What?'

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