00:00Iran is vowing revenge after a deadly strike.
00:02A top security chief, Alay Larjani, has been killed.
00:06This could shift the balance of power overnight.
00:09Iran responded with missile attacks on Israel.
00:13Explosions were seen across central areas.
00:15At least two people have been reported dead.
00:18Some strikes may have used cluster-style munitions.
00:21Then the U.S. stepped in.
00:235,000-pound bombs hit Iranian missile sites.
00:26The target was near the Strait of Hormuz,
00:29one of the world's most critical oil routes.
00:31And now U.S. forces are moving closer.
00:34A warship with Marines is heading to the region.
00:37Tensions are rising fast.
00:40One strike started it all.
00:41Now the world is watching what comes next.
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