A drone strike in Pakistan killed 15 people Monday. The third strike in three days brought the death toll during that period to 27. The strike in the tribal border region of Waziristan came as the United States and Islamabad butt heads over supply routes the country shares with Afghanistan. Attacks by the unmanned aircraft have drawn widespread anger from the Pakistani public, and the government in Islamabad has said that collateral damage has led to an increase in anti-American feeling in the country. The U.S. maintains that the strikes are effective and target only militants.