Pakistan's government has lodged a strong protest with the United States over an air strike that killed 11 Pakistani soldiers at a checkpoint along the Afghan border.
Details about Tuesday's attack are still not clear. U.S. military officials in Afghanistan issued a statement Wednesday saying coalition forces retaliated after coming under fire from militants just 200 meters inside the Afghanistan border in eastern Kunar province. U.S. officials said the operation was coordinated beforehand with Pakistan.
A Pakistani army spokesman called the U.S. air strike an "unprovoked and cowardly" act.
Pakistan's Foreign Ministry also issued a statement saying the air strike undermines the very basis of its cooperation with U.S. coalition forces.
A U.S. Defense Department spokesman, Geoff Morrell defended the deadly air strike, saying it was a legitimate act against forces that had attacked coalition troops.