Deputy foreign minister Sergei Ryabkov said Russia had warned the US that "pumping weapons from a number of countries it orchestrates isn't just a dangerous move, it's an action that makes those convoys legitimate targets".

He also denounced the US sanctions against Moscow as an "unprecedented attempt to deal a serious blow to various sectors of the Russian economy," but noted that Moscow will act in a measured way to avoid hurting itself.

Ryabkov said that Russia has no intention to expel Western media and businesses amid the soaring tensions with the West, adding that "we aren't going to escalate the situation."

It comes after Biden has warned of "World War Three" after personally halting plans to send MiG fighter jets from Poland to Ukraine.