The problem is that the West seems unable to grasp that the people who are in power in Kiev – who came to power as the result of an illegal coup against an elected President – are, at least on the basis of their current actions, a liability. A liability in as much as they are still dreaming of retaking Crimea and recapturing Donbass on their terms. (It is true of course that there has been an election since the coup – but this happened after the country was already fragmented. If the clock could be rolled back to 2014 any democrat would say that the best thing to have done would have been to wait until the Presidential elections, which were due in 2015 anyway, could settle the question of an alignment with the EU, rather than drive Yanukovych out in an illegal coup).
Crimeans voted 80% to join Russia. The 80% has been subsequently confirmed by multiple polls by Western organisations. The East of Ukraine has always been more Russian leaning; the West more inclined to lean towards Europe. Yanukovych’s Party of the Regions had more support in the East. A Gallup poll in April 2014 makes it very clear how Ukraine is split between a pro NATO/EU West, a pro-Russia East and a more balanced centre.  Ukraine as a country is riven by a fault-line – facing both East and West. The crisis in 2014 was prompted by the EU and Russia fighting over Ukraine; they put pressure on the country and the fault-line came into the open.
The situation now reflects this split. Crimea is with Russia. The Donbass would like to be. (It is anecdotal of course but the one person I know from the Donbass assures me that her family would rather be part of Russia than Ukraine). The political elite in Kiev cannot accept this reality and dream openly of reconquering Crimea and they seem unable to accept that they will have to grant Donbass substantial autonomy to settle the conflict. This is unrealistic.
The West should tell their clients in Kiev to implement the Minsk agreements and quickly offer the Donbass region substantial autonomy. Instead they supply them with weapons and military trainers and support them in their belief that the crisis in Donbass has been instigated by Russia (rather than reflecting the actual feelings of the people in that region). This creates an unstable situation.
The media of course in the West drills its readers daily in “Russian aggression”. It is highly unlikely that the Kremlin would want to take Ukraine; the country is a basket case with a far lower GDP per capita than Russia and problems with corruption. Russia will act militarily to protect the citizens in Donbass if Kiev breaks Minsk and tries a military adventure. They have said so. Again – the capitals in the West should act responsibly and disabuse their clients in Kiev of the notion that they can retake Crimea on any terms and the Donbass militarily. Any other course leads to real danger of war. And it will not be “Russian aggression” that got us there. But Western intransigence. This fatal inability to clearly analyse situations and instead to mistake the echo-chamber of their own propaganda and imperialistic delusions for an ‘analysis’ of the situation.
(For what it is worth it is my view that Russia has no right to say that Ukraine can’t be part of NATO – though they can advise that if Ukraine did become part of NATO they might have to put more weapons near the border).