Lots of countries, including Russia, export weaponry. Arms sales are an established part of the legal international order.
RT @KyivIndependent: ⚡️Media: NATO members informally agree not to supply Ukraine with aircraft and tanks.

Citing its sources in NATO, the German Press Agency reported that alliance members fear Russia could see the delivery of Western tanks and combat aircraft as entering the war.

🐦🔗: https://nitter.eu/DanielJHannan/status/1529710984666947589