Russia said it was hit by a “massive” drone attack overnight Tuesday, hours ahead of critical talks between officials from Washington and Kyiv.

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 assault, which the mayor called the largest on Russia’s capital since the war began, was a reminder of Ukraine’s power to strike as its president proposes an air truce.