The U.S. military on Tuesday identified four of the first American soldiers killed in the war against Iran. WASHINGTON, March 3 (Reuters) - The U.S. military on Tuesday identified four of the first American soldiers killed in the war against Iran as the Trump administration warned the intensifying conflict would lead to more American casualties. Among six U.S. military deaths so far, the four soldiers were members of an Iowa unit of the U.S. Army Reserve. They died on Sunday when a drone