President Obama meets with Turkish Prime Minister Recep Tayyip Erdogan on Tuesday in New York City. Turkey has agreed to a U.S. radar installation as part of a NATO missile defense system. Pool/Getty Images hide caption

itoggle caption Pool/Getty Images

Penetrator bombs, commonly known as bunker busters, are stored on pallets at an ammunition plant in McAlester, Okla., in 2002. The U.S. sold 55 bunker busters to Israel in 2009, according to a recent Newsweek report. Sue Ogrocki/AP hide caption

itoggle caption Sue Ogrocki/AP

U.S.-born cleric Anwar al-Awlaki was killed Friday in a U.S. airstrike in Yemen. U.S. officials say he was linked to several major terrorist plots in recent years. Anonymous/AP hide caption

itoggle caption Anonymous/AP

Saudi men wait to cast their votes in municipal elections in Riyadh, Saudi Arabia, on Thursday. Turnout appeared to be low. King Abdullah says that women will be allowed to vote in the next municipal elections, in 2015. Hassan Ammar/AP hide caption

itoggle caption Hassan Ammar/AP

U.S. Secretary of State Hillary Clinton shakes hands with Egypt's Foreign Minister Mohammed Kamel Amr during a joint press conference in Washington on Wednesday. Amr sought to assure the U.S. that Egypt is moving toward democracy. Saul Loeb/AFP/Getty Images hide caption

itoggle caption Saul Loeb/AFP/Getty Images