@Tfmonkey got it from Jacob Dreizin, who summed that up as, “U.S. House Republicans won’t agree to more Ukraine aid until those jokers show some “results” with their Big Counteroffensive. To get around that, we just now “downward revised” the value of our prior Ukraine arms shipments, such that we can now send more, before we come up against the Congressionally authorized limit.”

Concluding with: (see screenshot there aren't enough characters left to post quote)