Sweden also announced Tuesday it would contribute $275 million to a joint effort along with its Nordic neighbors Denmark and Norway to provide $500 million worth of air defenses, anti-tank weapons, ammunition and spare parts.

After a recent deal for European NATO allies to purchase American weapons, including Patriot missiles, Ukraine is waiting anxiously to see if these arrangements can deliver the defensive firepower it so urgently needs.

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.