Why are Ukrainians unhappy with the US-Russia diplomatic meetings?

Ukrainians are displeased because the United States is rushing to meet with Vladimir Putin without Ukrainian representation at these talks. After three years of US support while fighting to defend their territory (with Russia having taken 20% of their land), Ukrainians want to understand this diplomatic pivot. The absence of Ukrainian participation in peace discussions directly affecting their future is particularly troubling to them, as they continue fighting for their livelihood against Russian aggression while being excluded from negotiations that will determine their fate.