Oil prices, which have risen sharply since the start of the war, gained more than 3% on Monday after the strikes. DUBAI, June 1 (Reuters) - Iran and the United States said they had both carried out strikes on military targets, and each accused the other of acting aggressively as diplomatic efforts to end three months of war drag on. The U.S. military said it had at the weekend struck Iranian air defenses, a ground control station and two drones that were threatening ships after “aggressive