A gunbattle and airstrikes killed an estimated two dozen Taliban fighters in southern Afghanistan, while more than 20 suspected militants drowned when security forces sank their boat as they were crossing a river to flee an attack, officials said Tuesday. NATO's International Security Assistance Force, meanwhile, said one of its soldiers died in eastern Afghanistan during a battle with "enemy fighters." The soldier's nationality was not released, but most soldiers in the east are American. The Taliban fighters attacked Afghan and U.S.-led coalition troops with rockets and gunfire Monday in the Shah Wali Kot district of Kandahar province, sparking a four-hour battle, a coalition statement said. Fighter aircraft bombed three enemy positions, it said. The statement said "an estimated two dozen enemy fighters" were killed during the battle, but gave no further details on the casualty toll.