AdvertisementWith Al-Qaida's Core Weakened, U.S. Shifts FocusFebruary 02, 2012Dina Temple-RastonfacebookEmailYemeni army soldiers gather at the historic castle of Rada last month, as hundreds of al-Qaida gunmen yielded to tribal pressure and withdrew from Rada, a town they had held for nine days. The U.S. is increasingly turning its focus to al-Qaida affiliates such as the one in Yemen. (AFP/Getty Images)