Which has now backfired, by his own hands. With interest.
In what way?
Arguably, that division within the West led the way for him to invade Ukraine.
Despite what's said in public, Ukraine is unlikely to be fast-tracked into the EU. Even if it was, it's still weaker without the UK in it (and the UK is also weaker), plus Ukraine would need significant EU funding, it's hardly making the EU stronger, is it?
You've also got Trump spouting nonsense about encouraging Russia to attack NATO members that he deems not to pay enough. It's hardly normal or showing Western strength and unity.