Defense Secretary Ash Carter (left) and Joint Chiefs Chairman Gen. Joseph Dunford, speak at the Pentagon on Friday. They announced that U.S. forces killed a senior Islamic State leader in an airstrike.
Manuel Balce Ceneta/AP
A Libyan fireman stands in front of a flaming oil storage tank in northern Libya's Ras Lanouf region on Jan. 23. It was set alight in fighting with the Islamic State, which has established a strong presence in the country and taken control of the city of Sirte.
People walk away from Brussels airport after Tuesday's terrorist attack. Analysts say the violence may reduce travel for a while but the industry should bounce back.
Geert Vanden Wijngaert/AP
French President Francois Hollande (center right) shakes hands with Turkish Prime Minister Ahmet Davutoglu, (center left) before a meeting during an EU summit in Brussels on Friday.
Stephane de Sakutin /AP
Secretary of State John Kerry on Thursday announces that the U.S. has determined that the Islamic State is committing genocide against Christians and other groups in Iraq and Syria.
J. Scott Applewhite/AP
Family members and friends carry the Turkish flag-draped coffin of Murat Gul, 20, a security agent killed in Sunday's explosion, during his funeral procession in Ankara, Turkey.