Ukraine launched its biggest ever drone attack on Moscow, killing at least two workers at a meat warehouse, injuring 18 others and causing a short shutdown at the Russian capital's four airports, Russian officials said.

The drones will be used to strike Russian targets in the Black Sea where UAVs have been used to devastating effect.

The Ukrainian military said on Wednesday that Russia launched three missiles and 133 drones in an overnight attack. It said the air force shot down 98 drones. Another 20 drones did not reach their targets,