Russia could start the next phase of its military campaign in Ukraine this weekend or early next week.

It is reported by NBC News, citing two senior Pentagon officials..

During a briefing that was held on condition of anonymity, U.S. defense officials said the U.S. is working to convince allies to send more artillery and ammunition to Ukraine so it can counter a new offensive..

The publication also notes that Russia increased the number of missile strikes on Ukrainian cities after the flagship of the Black Sea Fleet of the Russian Federation, the cruiser Moskva, sank..