By Jana Choukeir and Jasper Ward DUBAI/WASHINGTON, June 28 (Reuters) - The U.S. military said it struck Iran again, hours after a tanker was hit in the Strait of Hormuz, in the worst escalation since the two sides signed an interim peace deal two weeks ago. Each of the warring sides has accused the other of violating the agreement reached two weeks ago to end the four-month-old conflict.