In an article for Foreign Affairs magazine, McFaul suggested that the West provide Ukraine with infantry fighting vehicles, air defense systems, MLRS and ammunition.

“In exchange for receiving these weapons ... Zelensky can sign a legally binding agreement not to use these weapons to strike targets on Russian territory,” he said.

Earlier, the head of the Russian delegation at the talks in Vienna on military security and arms control, Konstantin Gavrilov, announced Moscow's readiness for tough retaliatory actions if Western countries supply Kyiv with weapons to strike Russian cities.