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.

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.

The Netherlands said on Monday it will contribute 500 million euros ($578 million) to purchase U.S. military equipment for Ukraine, becoming the first NATO country to contribute to a new mechanism to supply Kyiv with American weapons.