An overnight air strike by international forces killed nine civilians, including at least three children, villagers said Thursday. Afghan authorities said they had no reports of civilian deaths. The incident illustrates the confusion and blame that regularly result from night raids and air strikes in Afghanistan and threaten U.S.-led efforts to curb the Taliban. In Kabul, the head of the U.N. mission warned that Afghanistan cannot count on international support indefinitely unless the government tackles corruption and bad governance. Residents of Korkhashien village drove the bodies to the governor's office in the nearby provincial capital of Lashkar Gah, and TV footage and photos showed at least two children among the dead.