And you think the Ukrainian government just listens to whatever some guy from Britain says and does it? Give me a break.
Nobody is allowing Russia to back out now, you're right. In February they had the option of quitting while they were ahead and keeping Crimea. But Putin wanted to pretend he was Peter the Great and murdered thousands of Ukrainians, so now Ukraine will keep going until they are kicked out of both the Donbass and Crimea. In fact they'll be lucky not to lose Transnistria too. And if it reaches the point of Russian bankruptcy they will likely be booted from Abkhazia and South Ossetia as well.
1. NATO did not start this war, stop trying to twist facts. Russia started it when they invaded Crimea and the Donbass, and in February they tried to take the whole thing.
2. Yes NATO trained Ukraine because Russia had already invaded Crimea and the Donbass.
3. If they'd been prepared to the NATO standard for a war, they would already have had HIMARS, CAESAR, PzH2000 etc. and been trained on those systems.
This damn thing is really simple. People inside Ukraine have to abide by the rules of the recognised government, just as in any country. They cannot take a little piece for Russia and nor can Russia. If they want to live in Russia, they should go live in Russia. Minsk was a load of p!ss signed on to by a weak EU to try and appease Putin. Putin took it as a sign of weakness and kept pressing the line in Donbass, when Ukraine had finally had enough of it and pressed back, Russia invaded and made a jack*ss of itself.