Russia bombarded Ukraine’s second-largest city with massive strikes in the early hours of Saturday, its mayor said, one night after Moscow carried out one of the war’s largest aerial assaults on Ukraine.

Former Rep. Chris Stewart, a former fighter pilot, says the U.S. isn’t prepared for this change in modern warfare.

The attack injected some much-needed optimism into Ukraine, beleaguered by years of war and worn down by what many see as U.S. pressure to concede to Russian demands.

Russian ballistic missiles have been launched toward Ukraine from multiple directions, the Ukrainian Air Force said on Telegram Friday.

Steve Bannon warned on the "War Room" podcast that Ukraine's wildly successful drone attack on Russia's strategic bomber fleet could be construed as an act of war, depending on how much help the U.S.