US Air Force prepared if diplomacy with Iran fails: general

Washington (AFP) Feb 29, 2012 The United States has powerful bombs at the ready in the case of possible military action against Iran and work is under way to bolster their firepower, the air force chief said Wednesday. General Norton Schwartz, air force chief of staff, declined to say whether US weapons - including a 30,000-pound massive ordnance penetrator (MOP) bomb - could reach nuclear sites