Russia sends chilling ‘nuclear strikes’ threat to NATO – ‘Catastrophic consequences’

Robert Kuzovkov was killed on Monday in Poland in what is seen as part of a possible Russian sabotage campaign in Nato nations.

Russian foreign minister Sergei Lavrov previously warned of “massive coordinated strikes on a regular basis” in response to Ukraine's attack on a Moscow oil refinery for the second time this week.

President Volodymyr Zelenskyy has warned Ukrainians of a possible intensification of Russian strikes.

The plea comes after Ukraine launched one of its largest drone swarms at Moscow.