Incentives. Why does Ukraine and others want to join NATO in the first place? People and nations respond to incentives. NATO is good for Ukraine because it's a step towards closer integration with the West. And the West has the standard of living that people in Ukraine desire.
Give Ukraine a good enough scare and it won't join NATO although will keep wanting it still. Give Ukraine some healthy economic incentives to seek closer ties with Russia and some political respect and it will not seek to join NATO.
Very simple J
But no, respect to “orange” leaders?! Treat this under-state as an equal! What's next? Respect to Estonia? Treating Belarus as equal? Better build more tanks and give them all a good scare.
Jedem Das Seine.