Defense Secretary Ash Carter leaves a news conference at the Pentagon on Thursday. In an interview with NPR, Carter said a top priority was to drive the Islamic State out of its headquarters in Raqqa, Syria, and from Mosul, Iraq, that country's second largest city. Cliff Owen/AP hide caption
Inmate and Vietnam veteran Ed Munis works on his computer at the Veteran Service Office in California's Soledad Correctional Training Facility, which he helped start more than a decade ago. Krista Almanzan/KAZU hide caption
Hull stands in a room of his home decorated with photos of movie star John Wayne. "He was the only hero we had growing up. No one beats the Duke. You never heard about the Duke giving up," Hull says. Gordon King for NPR hide caption
Investigators prepare to enter one of the residences where suspect Edward Archer lived in Yeadon, Pa. Archer is accused of ambushing a police officer in Philadelphia on Jan. 7. The FBI has said it is investigating the attack as a possible act of terrorism — inspired by ISIS. Matt Rourke/AP hide caption
Hillary Clinton stands for a portrait in San Antonio. Ariel Zambelich/NPR hide caption
U.S. troops from the 82nd Airborne receive rifles in Sharm el-Sheikh, Egypt, in 1982. For decades, U.S. troops have been part of the multinational peacekeeping force in the Sinai Peninsula designed to ensure the peace treaty between Israel and Egypt. While the accord has held, extremists linked to ISIS now operate in the Sinai and are considered a threat to the Americans. Aristotle Saris/AP hide caption
Anti-gun groups and state officials joined New Yorkers Against Gun Violence to mark the sixth month anniversary of the Newtown massacre on the steps of New York City Hall in 2013. Bebeto Matthews/AP hide caption
A June 2013 photo shows a cell at the U.S. military prison in Guantanamo Bay, Cuba. Fourteen prisoners have been transferred in the past two weeks, bringing the total number of detainees below 100 for the first time since the facility opened in 2002. Joe Raedle/Getty News hide caption
This 2011 photo shows the heavy water nuclear facility near Arak. International sanctions relief will be triggered when Iran follows through on commitments to reduce its nuclear program. Hamid Foroutan/AP hide caption
Attendees at a gun show in Miami have mixed feelings about Obama's executive actions. Greg Allen/NPR hide caption
Attorney General Loretta Lynch (right) and FBI Director James Comey, seen at a meeting in Washington, D.C., in November, are among the Obama administration officials meeting Friday with tech industry leaders. Pablo Martinez Monsivais/AP hide caption
Afghan security forces patrol near their base in the Marjah district of Helmand province on Dec. 23. Dozens of Marines were killed in Marjah five years ago, and since then the Taliban have slipped back in. Now American forces are increasingly being drawn back into the fight. Noor Mohammad/AFP/Getty Images hide caption
A Hellfire missile like this one being loaded onto a U.S. Air Force Predator drone went missing in 2014 — and turned up in Cuba. The U.S. says it lacks key internal components. John Moore/Getty Images hide caption
Burns Paiute Tribal Chairperson Charlotte Rodrique talks to reporters about the armed occupation of the Malheur National Wildlife Refuge near Burns, Ore., on Wednesday. Manuel Valdes/AP hide caption