Al Qaeda rebounds in Yemen , Egypt 's Sinai region , Libya , Iraq , east and west Africa . Al Qaeda in Yemen is especially concerning . It has been linked to the attack on a U.S. diplomatic compound in Benghazi that killed four Americans including Ambassador Chris Stevens. The terror group has established a strong foothold in Syria in the chaos of a civil war .
Al Qaeda rebounds in Yemen , Egypt 's Sinai region , Libya , Iraq , east and west Africa . Al Qaeda in Yemen is especially concerning . Recently intercepted messages suggest `` active plotting , '' a source says . The terror group has established a strong foothold in Syria in the chaos of a civil war .