"The United States and its NATO allies continue to pump weapons into Ukraine. I can confirm that any transport from the North Atlantic alliance that arrives in the country with weapons or materiel for the Ukrainian armed forces will be considered by us as a legitimate target for destruction," Shoigu said according to state sources.

The warning comes after the US has led the way in providing billions in military aid to Kiev, and the UK approved a fresh $375 million package. Germany has also  approved sending heavier weaponry, though Berlin has also said its own military stockpiles are depleted and running low.

Meanwhile, on Tuesday Russia launched a large number of cruise missiles targeting railway and electrical infrastructure in various regions of Ukraine, including in the Western city of Lviv, knocking out power to large swathes of the city for hours overnight.

Ukraine's military command previously commented that targeting rails has been part of ongoing Russian efforts to completely disable the country's military transport infrastructure, specifically with an eye on foreign arms transfers. Kiev and the UN have also condemned attacks on civilians and vital civilian transport at a time of unprecedented numbers of internally displaced war refugees.