An Afghan army soldier takes position near an office of the British charity Save the Children during an ongoing attack in Jalalabad on Jan. 24.
(Noorullah Shirzada /AFP/Getty Images)
NATO Secretary-General Jens Stoltenberg and U.S. President Donald Trump take seats at a working dinner at NATO headquarters in Brussels on May 25, 2017. (Matt Dunham/AFP/Getty Images)
Iranian students protest at the University of Tehran during a demonstration driven by anger over economic problems, in the capital Tehran on Dec. 30, 2017. (STR/AFP/Getty Images)
Secretary of State Rex Tillerson and President Donald Trump wait for a luncheon with African leaders on Sept. 20, 2017 in New York. (Brendan Smialowski/AFP/Getty Images)
The State Department seal on the podium before a photo opportunity from Secretary of State Rex Tillerson, June 9 in Washington, D.C. (Drew Angerer/Getty Images)
Pakistani soldiers walk at the premises of an Agriculture Training Institute after an attack by Taliban militants in Peshawar on Dec. 1, 2017. (Abdul Majeed/AFP/Getty Images)
WASHINGTON, DC - NOVEMBER 15: Senate Health, Education, Labor and Pensions Committee member Sen. Todd Young (R-IN) listens to testimony during a hearing in the Dirksen Senate Office Building on Capitol Hill November 15, 2017 in Washington, DC. U.S. Surgeon General Jerome Adams testified before the committee about community-level health promotion programs and businesses that offer incentives to employees that practice healthy lifestyles. (Photo by Chip Somodevilla/Getty Images)
Secretary of State Rex Tillerson leaves for meetings after posing for photos for the press at the State Department on Nov. 29 in Washington. (Saul Loeb/AFPGetty Images)