Nope! It is not. One strike does not mean anything one way to other.
RuAF should have dominated the skies. It is not at al! Everyday, UAV videos are coming even quite a few Ukraine Mig-29s and Su-25s.. Flow of weapons continuously going on. Otherwise, Russian would have advanced much much quicker and would not *have to* retreated from anywhere.
Forget about weapons' shipments but foreign leaders are coming and leaving Kiev as they wish when they wish.
In short, Ukraine is very much connected to rest of the world and is getting all the support it needs. This is a recipe for a *huge cost* for Russia. As clearly can be seen. Russia, with RuAF and Navy, should have able to close to country. Instead we are observing a trench war.