U.S. consulate

As he deals with the anti-American unrest in the Middle East, and the killing of four U.S. diplomatic personnel in Libya, President Barack Obama is continuing his campaign for re-election -- telling a crowd in Colorado that "no act of terror will go unpunished."

A senior security official says the attack that killed four Americans in Libya, including the U.S. ambassador, was an organized two-part operation by heavily armed militants that included a precisely timed raid on a supposedly secret safe house just as Libyan and U.S. security forces were arriving to rescue evacuated consulate staff.

Chanting "death to America," hundreds of protesters angered by an anti-Islam film stormed the U.S. Embassy compound in Yemen's capital and burned the American flag on Thursday, the latest in a series of attacks on American diplomatic missions in the Middle East.

Sen. John McCain is accusing President Barack Obama of pursuing "a feckless foreign policy" that has compromised American influence around the world.

The White House says President Barack Obama has called the presidents of Libya and Egypt and urged them to continue working with the United States to ensure the safety of diplomatic personnel.

U.S. officials say the Obama administration is investigating whether the assault on the U.S. consulate in Libya was a planned terrorist strike to mark the anniversary of 9/11, and not a spontaneous mob enraged over a anti-Islamic YouTube video.