The Iraqi government and military collapsed within three weeks after the beginning of the U.S.-led invasion on March 20. The United States tried at least twice to kill Saddam with targeted air strikes, but both failed to hit their target. By the beginning of April, Coalition forces controlled much of Iraq. The resistance of the much-weakened Iraqi Army either crumbled or shifted to guerrilla tactics, and it appeared that Saddam had lost control of Iraq. He was last seen in a video which showed him in the Baghdad suburbs surrounded by supporters. When Baghdad fell to the Coalition on April 9, Saddam was nowhere to be found.