Vladimir Putin's ambiguous signaling about his atomic intentions so far in the Ukraine war took a more formal turn when he announced a loosening of Russia's nuclear doctrine. Putin did not mention Ukraine by name,

The saber rattling from Russia has come hard and fast in recent days, but European leaders barely seemed to flinch.

Vladimir Putin escalated his nuclear threats against the West on Wednesday, saying that any attack on Russia using conventional weapons supported by a nuclear power would now be perceived as a joint strike.