Those countries have been sending their Soviet stuff to the Ukraine for months. No amount of weapons will make the Ukies better fighters...
I have only seen rumors and speculations about weapons being sold to Ukraine. Only official info is about countries helping Ukraine with non-lethal stuff like helmets and night vision goggles.
They were fighting pretty well against the Russian mercenaries, which is why Russia intervened in the first place.
Do not cast dispersions on Ukraine fighters. They went to the fron lines without the simplest of military supplies!
Ukraine has been a staunch ally of U.S.A. for a long time. Even during this crisis, Ukraine was still part of U.N. peacekeeping in Africa!