Protesters angered by a film they consider blasphemous to Islam have stormed the U.S. Embassy compound in Yemen's capital, Sanaa, in the most recent attack on U.S. diplomatic posts in the Middle East. Protesters smashed windows as they breached the embassy perimeter and reached the compound grounds, although they did not enter the main building housing the offices. Angry young men brought down the U.S. flag in the courtyard, burned it and replaced it with a black banner bearing Islam's declaration of faith — "There is no God but Allah." Yemeni security forces who rushed to the scene fired in the air and used tear gas to disperse the demonstrators, driving them out of the compound after about 45 minutes and sealing off the surrounding streets. It was not immediately clear whether anyone was inside the embassy at the time of the attack. Demonstrators removed the embassy's sign on the outer wall, set tires ablaze and pelted the compound with rocks. Yemeni President Abed Rabbo Mansour Hadi ordered an investigation into the attack.