U.S.-led strike should not have collapsed Mosul building - U.S. commander

WASHINGTON (Reuters) - The top U.S. commander in Iraq on Tuesday said the type of weapon fired by the U.S.-led coalition in Mosul in a recent air strike should not have caused a blast big enough to collapse an entire building, a potential sign of Islamic State's role in civilian casualties.

"Actually our munitions, the fact that the whole building collapsed, actually contradicts our involvement," said U.S. Army Lieutenant General Stephen Townsend, addressing Pentagon reporters.