Pentagon hints at possible retaliation after Yemen missile fire

By Phil Stewart and Idrees Ali WASHINGTON (Reuters) - The Pentagon on Tuesday warned that whoever fired missiles at a U.S. Navy destroyer and an accompanying ship off the coast of Yemen over the weekend had done so "at their own peril," language that suggested preparations for possible retaliation. Two shore-launched cruise missiles, which U.S. officials believe were designed to hit vessels at sea, were fired at the U.S. Navy ships on Sunday from Houthi-controlled territory of Yemen, just north