Russia on Friday warned countries arming Ukraine that they will be considered “legitimate targets” for retaliation.

“We clearly said that any cargo moving into the Ukrainian territory which we would believe is carrying weapons would be fair game,” Foreign Minister Sergey Lavrov told RT television, a state-controlled network, ABC News reported.

“This is clear because we are implementing the operation the goal of which is to remove any threat to the Russian Federation coming from the Ukrainian soil.”