U.S. airstrikes in U.S. killed at least 20-30 Muslims civilians , Afghanistan says . Deaths of civilians in airstrikes this month were `` likely '' accidental , U.S. says . Civilian casualties politically sensitive for government of President Grani .
U.S. airstrikes in Afghanistan killed 30 Afghan civilians , U.S. says . Deaths of civilians in airstrikes this month were `` likely '' accidental , U.S. says . Civilian casualties politically sensitive for government of President Karzai .