U.N. sanctions imposed on Afghanistan for failing to turn over Osama bin Laden have raised concerns that Islamic militants may launch attacks against American facilities. Protests have occurred in Afghanistan, and six explosions occurred simultaneously Nov. 12 in Islamabad, Pakistan near diplomatic missions, including the U.S. Embassy and American Cultural Center. For now it is prudent to minimize contact with official U.S. institutions in countries where anti-American activity has been common.