The Portuguese navy reported that their aviation spotted a Russian submarine in the Mediterranean Sea near Gibraltar. It was likely the B-261 Novorossiysk, withdrawn from the Tartus base in Syria.

NAPLES, Italy — A U.S. Navy submarine spotted earlier this week near Gibraltar made a port visit to the city on Saturday, the service said. The fast-attack submarine USS Indiana arrived in ...

WASHINGTON--China's newest nuclear-powered attack submarine sank earlier this year, a senior U.S. defense official said on Thursday, a potential embarrassment for Beijing as it seeks to expand its ...