Anti-Americanism, always high in some quarters of Pakistan, is growing with the belief that the U.S. is planning an attack on Afghanistan in retaliation for the bombing of the destroyer Cole in Yemen. If U.S. officials find clear evidence that Osama bin Laden was responsible for the attack, retaliation in Afghanistan is likely. Clerics in Pakistan have threatened a holy war against the U.S. if such an attack is launched, vowing to kill all Americans in Pakistan. Follow press reports and defer travel here if hostilities erupt in Afghanistan.