WASHINGTON - Intelligence experts scouring the latest video of Osama bin Laden for clues warned on Saturday that his message offers hints that Al-Qaeda is planning another attack on US interests. In his first video appearance in three years, the elusive Al-Qaeda chief mocks the United States as "weak" and vows to escalate fighting in Iraq, all the while using language similar to the kind used ahead of other past attacks. At times, bin Laden speaks directly to Americans, using plain language that "appears to be crafted in a way as to be understood by the average person on the...