The reality of neo-Nazis in Ukraine is far from Kremlin propaganda - The Hill
America’s Collusion With Neo-Nazis. Neo-fascists play an important official or tolerated role in US-backed Ukraine. - The Nation
Neo-Nazi threat in new Ukraine: NEWSNIGHT - BBC
Inside A White Supremacist Militia in Ukraine - Time
The Evolution of the Far Right in Ukraine Pg 34 - Combating Terrorism Center at West Point, United States Military Academy (USMA)
It should but due to the fact that its current government is a puppet government controlled by the West (not to mention full of fanatical ideologues who, to put it mildly, are not on good terms with reality), it does not act in the best interests of Ukraine. The national interest of Ukraine lies in having good relations with Russia. Pre-2014 Ukraine was attempting to balance between Russia and the West, which was a pretty lucrative arrangement for them. They were getting to play the role of a bridge between two very important economies, trading with both and collecting all kinds of transit fees such as on gas.
Unfortunately the US and EU were not satisfied with that and they overthrew that government and installed a fanatically russophobic regime into power that proceeded to destroy Ukraine’s economic viability by irrationally cutting ties with Russia despite the fact that the Ukrainian manufacturing economy had been designed since Soviet times to be intertwined with that of Russia. Then they proceeded to launch a brutal eight year war on their own people simply because those people demanded autonomy and protection from the discriminatory laws that the new - illegitimate - government was passing. None of this benefited Ukraine or the Ukrainian people.
But this is what happens when a country loses its sovereignty, and worse, lets the lunatics take over the asylum. We can argue all day about whether this is fair but the reality is, a country like Ukraine has to take into account the interests of its larger and more powerful neighbor. It is highly unwise to provoke and poke at someone stronger than you until they snap. It is also a fact that Ukraine would be better off if they stopped fighting. It may be hard to swallow for the nationalists but they could start to recover economically and more importantly people would stop dying. Ukraine may dream of ending the war on their terms but that is not happening. There is no indication that that is even remotely possible. At some point you have to cut your losses.