Two deliveries of equipment, most of it bought in the United States, are expected this month, although the Nordic package is expected to arrive in September. The equipment is supplied based on Ukraine’s priority needs on the battlefield. NATO allies then locate the weapons and ammunition and send them on.

European NATO allies have agreed to buy American weapons for Ukraine amid waning U.S. pledges, raising hopes—and questions—about whether this will be enough to sustain Kyiv’s defense.