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Is not unnacounted for, it is completely made up by Trump. You can notice that it grew as he needed to make it look bigger to justify dropping Ukraine into Putin's hands.
Most of it was military aid, not money and is actually creating US jobs.
Again, nobody know the future. But Z did it to himself in the White House visit. [...]
What happened at the WH is largely irrelevant. There is an underlying problem that is Trump not planning for a security guarantee for Ukraine and trying to force Ukraine to sign a shitty deal.
Ukraine could have signed that type of deal at anytime during the last three years, but it is obvious (and I have posted recently a detailed analysis) that it does not solve the problem of Putin invading again in a couple of years if not earlier. That type of arrangement is firstly the death sentence for Ukraine and anyway unacceptable for the Ukrainian pairlament and leaders.