“U.S. embassies across the world ramped up security Thursday following an attack that killed the U.S. ambassador to Libya, as Muslims angry over an anti-Islam film stormed the U.S. mission in Yemen and clashed with police near the American mission in Cairo.
President Barack Obama ordered increased security at U.S. sites worldwide after Ambassador Chris Stevens and three other Americans were killed Tuesday in an attack on the U.S. Consulate in Benghazi, Libya.”
Source: “The Associated Press: Security boosted at US sites after Libya attack”