Specks of orange light streak across the night sky as air raid sirens wail in the background. It is an unnerving spectacle that has become a feature of the war here, as Iran has increasingly outfitted some of its ballistic missiles with cluster munitions, aiming to pierce Israel's sophisticated air defenses.

WASHINGTON (AP) -- A U. S. submarine's deadly attack on an Iranian warship does not appear to have violated international or American military law, though it's not yet clear whether the sub took sufficient measures to rescue nearly three dozen survivors, legal experts said.