War and unrest

This undated photo provided by the FBI shows Mohammed Alshamrani. The Saudi student opened fire inside a classroom at Naval Air Station Pensacola on Friday before one of the deputies killed him. (FBI via AP)

This photo taken from video provided by WEAR-TV shows emergency responders near the Naval Air Base Station in Pensacola, Fla., Friday, Dec. 6, 2019. The US Navy is confirming that an active shooter and one other person are dead after gunfire at the Naval Air Station in Pensacola. Area hospital representatives tell The Associated Press that at least 11 people were hospitalized. The base remains locked down amid a huge law enforcement response.  (WEAR-TV via AP)

This photo taken from video provided by WEAR-TV shows emergency responders near the Naval Air Base Station in Pensacola, Fla., Friday, Dec. 6, 2019. The US Navy is confirming that an active shooter and one other person are dead after gunfire at the Naval Air Station in Pensacola. Area hospital representatives tell The Associated Press that at least 11 people were hospitalized. The base remains locked down amid a huge law enforcement response.  (WEAR-TV via AP)

This undated photo provided by West Midlands Police shows Usman Khan. UK counterterrorism police are searching for clues into an attack that left two people dead and three injured near London Bridge. Police said Saturday, Nov. 30, 2019, Khan, who was imprisoned six years for terrorism offenses before his release last year stabbed several people in London on Friday, Nov. 29, before being tackled by members of the public and shot dead by officers on the London Bridge. (West Midlands Police via AP)

A person is assisted after falling when Police evacuated people from Borough Market on the south side of London Bridge in London, Friday, Nov. 29, 2019. British police say several people have stabbed near to London Bridge, and a man has been detained. The news came after witnesses reported hearing gunshots in the area. (AP Photo/Frank Augstein)

President Donald Trump holds up a tray of Thanksgiving dinner during a surprise Thanksgiving Day visit to the troops, Thursday, Nov. 28, 2019, at Bagram Air Field, Afghanistan. (AP Photo/Alex Brandon)

People carry clothes and other supplies distributed by authorities in Thumane, western Albania, Friday, Nov. 29, 2019. The operation to find survivors and recover bodies from Albania's deadly earthquake was winding down Friday as the death toll climbed to 49. (AP Photo/Visar Kryeziu)

FILE - In this Tuesday, July 16, 2019 file photo, health workers dressed in protective gear begin their shift at an Ebola treatment center in Beni, Congo DRC. The World Health Organization said Friday Nov. 22, 2019, there has been “a very dangerous and alarming development” in efforts to end the Ebola outbreak in eastern Congo, warning that the eruption of violence may re-ignite the epidemic. (AP Photo/Jerome Delay, File)

A volunteer shoulders a helium hose as balloons are inflated Wednesday, Nov. 27, 2019, the day before the Macy's Thanksgiving Day Parade in New York. The parade on Thursday will take place amid strong winds that could potentially ground the giant character balloons. (AP Photo/Mark Lennihan)

In this Saturday, Nov. 23, 2019 photo, U.S. Navy Secretary Richard Spencer fields questions at a media availability at the Halifax International Security Forum in Halifax, Nova Scotia. U.S. Defense Secretary Mark Esper has fired the Navy’s top official over his handling of the case of a SEAL accused of war crimes who President Donald Trump has defended. Esper said on Sunday, Nov. 24 that he had lost confidence in Spencer and alleged that Spencer proposed a deal with the White House behind his back to resolve the SEAL’s case. (Andrew Vaughan/The Canadian Press via AP)