"U.S. believes Ukrainian missiles sank Russian warship"-CNBC

The U.S. now believes Ukrainian missiles sank the Moskva, an official told NBC News.

It’s not clear why the ship’s defenses didn’t kick in, the official told NBC News, although there could have been several factors at work, including maintenance issues.

The official also said that the U.S. doesn’t know whether a drone might have distracted the Russian ship’s air defenses.

Russia appears to be retaliating for the sinking of its flagship missile cruiser Moskva, which Ukrainian forces say they hit with missiles, as explosions are heard in Kyiv.