Dave.

It’s pretty simple:

• USA and Russia have public talks and say they have a “good solution”.
• Ukraine says ,“We are not interested in a solution negotiated by a third party and the aggressor in this conflict”
• USA says “oh look Ukraine isn’t coming to the party here these negotiations were in good faith we can’t believe how they’re acting we are withdrawing support.”
• Ukraine gets stomped on, USA and Russia divvy up the spoils of war.