After Zellenskyy "challenged" U.S., White House is sending Ukraine javelin missiles, anti-aircraft systems, ammunition and "switchblade" drones

The White House said that President Biden was "speaking from the heart" about Russian President Vladimir Putin's "barbaric actions" when he called Putin a "war criminal." 

A legal review is underway at the State Department to review Russia's actions in Ukraine and whether they constitute war crimes. 

Putin's spokesperson called the comment "unacceptable and unforgivable."