Even before thus, Ukraine learned painfully that it shouldn't share every plan and every detail with the US. It kind of looks like a sad, self-fulfilling proficy. Ukraine makes a plan, some details get leaked state side, plan goes disastrously. Ukraine plans another operation, doesn't say anything, the plan goes off ok. The US feels betrayed and Ukraine looks like an ungrateful ally abusing trust, the relationship is strained. The election happens and Trump points at how they're a bad partner yadda yadda. Ukraine is blamed for the outcome of what is originally an American problem, the US leaking like a sieve.