Even with a burst of new weapons and ammunition, it is unlikely Ukraine will immediately recover after months of setbacks.

For the exhausted Ukrainian artillery gunners holding off Russian forces near the eastern town of Kupiansk, the U.S. aid package expected to finally pass this week is a lifeline and, potentially, a gamechanger,

The outlay reached $2.4 trillion last year, a research group found, 6.8 percent up on 2022. Tensions in Asia and the Middle East also contributed.