You drank the grape kool-aid again.You're going to want to check that. Russian tanks were still in Ukraine as of last winter, and they just put 1100 tanks on ukraine's border.The Javelin is a game changer in Ukraine. The Russians can't use their MBTs anymore and pulled them off the battlefield because of the Javelin threat after the Trump administration approved the sale of Raytheon's Javelins to Ukraine.
Furthermore, a condition of the sale of the javelins is that they cannot be used in the conflict zone. So none have been or can be used.
Basically, we made it a rule that they cant actually use them against the pro russian separatists.