US cannot finance Ukraine forever especially at $200 million a day. Ukraine depends totally on NATO and US to provide weapons and humanitarian support for its entire population during the war. The cost are only going to escalate if you add in rebuilding costs + inflation. US has enough issues on its own, and Biden miscalculated that Sanctions and fierce resistance will break Russia financially. Much of those assumptions has not materialized. Russia is focusing efforts in the east only, so logistic issues will be more of a challenge for the Ukrainian army. Ukraine army was never configure for an offensive war, so Zelensky's fantasy to recapture the East will never materialize unless Putin is sacked/Russia collapsed. Indication are very abysmal so far for Ukraine. Zelensky also has to consider long term effects of War in Ukraine, which also has deep demographic issues due to losing 6 million refugees, and Donbass, Luhansk and Mariupol area is around 2 million. So ukraine lost 8 million people leaving the country and most never returning. If the war drags on, more and more people will be leaving. With only 25 million people, and such a large geographical size, and shattered infrastructure, Ukraine will be hemorrhaging for a very long time.