The United States appeared to rule out on Monday a proposal by the head of the U.N. nuclear watchdog agency aimed at helping the West and Iran avert a rush to war over Tehran’s nuclear program. Mohamed ElBaradei, director-general of the Vienna-based International Atomic Energy Agency, has proposed a “timeout” in the confrontation between Tehran and the U.N. Security Council under which Iranian nuclear work and U.N. sanctions on Tehran would be simultaneously suspended. Full Story