South Koreans watch North Korean leader Kim Jong Un's televised New Year's address, at the Seoul Railway Station on Monday. Kim said the United States should be aware that his country's nuclear forces are now a reality, not a threat. Lee Jin-man/AP hide caption
New York Police Department officers prepare for New Year's Eve celebrations in Manhattan's Times Square in New York. Eduardo Munoz/Reuters hide caption
President Trump arrives to board Air Force One at Joint Base Andrews in Maryland on Dec. 22. Openly transgender people will be allowed to enlist in the military starting Monday after the White House decided not to appeal. Carlos Barria/Reuters hide caption
President Trump and North Korean leader Kim Jong Un are expected to continue to square off in 2018. Evan Vucci, Wong Maye-E/AP hide caption
Opponents of President Trump's travel ban protest outside the U.S. Supreme Court earlier this month. Legal challenges to the ban are likely to eventually reach the high court. Brendan Smialowski/AFP/Getty Images hide caption
Former FBI Director James Comey is sworn-in before testifying before the Senate Intelligence Committee on Capitol Hill on June 8. Drew Angerer/Getty Images hide caption
John Coster-Mullen Meredith Rizzo/NPR hide caption
FBI Deputy Director Andrew McCabe testifying before a House Appropriations subcommittee meeting in June. Pete Marovich/Getty Images hide caption
FBI Deputy Director Andrew McCabe is Capitol Hill on Thursday for a meeting with members of the House Oversight and House Judiciary committees. Chip Somodevilla/Getty Images hide caption
The FBI said the Christmas Day attack was planned for Pier 39, a popular San Francisco tourist destination near Fisherman's Wharf. Eric Risberg/AP hide caption
An Army team at Dover Air Force Base, Del., carries a transfer case containing the remains of Sgt. 1st Class Hughton O. Brown on Nov. 16. Steve Ruark/AP hide caption
A congressional staff member displays images of social media posts during a House Intelligence Committee hearing in November about Russian use of social media. Alex Wong/Getty Images hide caption
President Trump and China's President Xi Jinping attend a state dinner at the Great Hall of the People in Beijing last month. Thomas Peter/AP hide caption
The Advanced Aviation Threat Identification Program at the Pentagon was tasked with making sense of information from members of the military when they spotted unidentified flying objects. Daniel Slim/AFP/Getty Images hide caption
Deputy FBI Director Andrew McCabe is testifying before the House Intelligence Committee on Tuesday. Pete Marovich/Getty Images hide caption