Ukraine war live updates: Ukraine accused of another nuclear plant drone strike; Flooding worsens in Russia's Orenburg

This is CNBC's live blog tracking developments on the war in Ukraine.

Officials at the Russian-controlled Zaporizhzhia nuclear plant in southern Ukraine on Tuesday accused Kyiv of a further drone attack, after an unmanned aerial vehicle allegedly fell onto the roof of its training centre.

Kyiv has denied that it is behind a series of strikes on Europe's largest nuclear plant in recent days that prompted the International Atomic Energy Agency to sound the alarm over nuclear safety, and has instead accused Moscow of using the seized facility as a propaganda platform.

U.S. State Department Spokesman Matthew Miller on Tuesday called on Russia to end its militarized occupation of the facility and said Moscow is "playing a very dangerous game,"

Meanwhile, Russian authorities continue to battle historic flooding in the southern region of Orenburg. More than 300 homes have been flooded and there's an order in place to evacuate more than 100,000 people as water levels in the Ural River continue to rise rapidly.

More than 300 homes have been flooded in the southern Russian city of Orenburg after rapidly melting snow from the Ural Mountains caused the region's worst flooding in decades.

Authorities warned overnight that the situation in Orenburg is dangerous and ordered the evacuation of more than 100,000 by late Wednesday.

The Ural River, Europe's third-longest, rose by another 20 inches from its critical level of 30 feet late on Tuesday. The river flows through Russia and Kazakhstan and into the Caspian Sea, and the situation is expected to worsen through Thursday.

- Elliot Smith

Officials at the Russian-controlled Zaporizhzhia nuclear plant in southern Ukraine on Tuesday accused Kyiv of another drone attack, claiming an