In 2014 the United States backed an uprising — in its final stages a violent uprising — against the legitimately elected Ukrainian government of Viktor Yanukovych, which was pro-Russian.
On Nov. 10, 2021, the United States and Ukraine signed a “charter on strategic partnership” that called for Ukraine to join NATO, condemned “ongoing Russian aggression” and affirmed an “unwavering commitment” to the reintegration of Crimea into Ukraine. That charter “convinced Russia that it must attack or be attacked”
The United States started arming and training Ukraine’s military.
The United States is trying to maintain the fiction that arming one’s allies is not the same thing as participating in combat.
The United States is making no concessions. So the administration is closing off avenues of negotiation and working to intensify the war.
You are not going to understand what is going on in Ukraine by listening to nightly news, or poorly researched propaganda releases.