This was widely reported at the time, and I would ask that you read this New York Times article from August 9, 2014:

"Despite growing jitters in the West, Ukraine’s military leaders say they are making a well-calculated gamble, betting that Mr. Putin feels he has too much to lose to invade, including the possibility of crippling international sanctions. So while Western officials view each new Ukrainian artillery barrage in Donetsk as drawing the country closer to the brink, the Ukrainians see their unchecked advance as further confirmation that Mr. Putin is mobilizing troops only as a scare tactic to keep them from reclaiming territory."

Everyone in the West KNEW they were playing with fire by allowing the Ukrainian Nazi militias like the Azov Battalion, Aidar Battalion, Kraken Battalion, Tornado Battalion, etc. to terrorise and slaughter pro-Russian Ukrainians in the Donbas.

This is why every Western politician, every Western media outlet, every Western pundit and celebrity must always insert the word “unprovoked” when talking about Russia’s invasion. They need to do this, they need to make The Big Lie as big as possible, because the more times you tell a lie, the more people believe it.

As you can see even from the NY Times (which always cheerleads for war), “Western officials” knew that Ukraine’s slaughter of ethnic Russians in the Donbas was “drawing the country closer to the brink”.

They did nothing, because THEY WANTED THE WAR.