Ukraine will not win this war if US support stops.
Ukraine will lose this war if EU support stops too.
If EU keep supporting at current rate and US support stops, Ukraine will buildup arsenal, resist and keep hitting Russian economic base but Russia will slowly gain ground.
If EU step up to support Ukraine to win and Ukraine keep attacking Russia's economic base, Russia will collapse due to politics and economics.
If US enter the fray, EU step up support and Ukraine keep destroying Russian economic base, Putin( if he is alive) will throw in the towel.
Most probable outcome is the war developing into an economic warfare as in 1905, 1915 & 1998 when Russia lost to Japan, Germany and Afghanistan mostly due to the collapse of the economy.
