The Pentagon said on Saturday it has begun delivering a new security assistance package to Ukraine, adding air-defense systems and artillery munitions as Russian forces continue to make gains on the battlefield.

The package is part of a wider $225 million aid measure approved by Congress last week. Officials said the latest shipment is intended to help Ukraine reinforce its air defenses and sustain frontline operations as the war grinds on.

The announcement comes amid renewed pressure on Ukrainian positions in several areas, underscoring Kyiv’s continued reliance on Western military support to counter Russia’s larger war machine. The deliveries are expected to bolster short-term defenses, though the conflict remains fluid and heavily dependent on future international assistance.

Washington has kept military aid flowing to Kyiv despite political debate over the scale and pace of support. The latest package reflects the Biden administration’s effort to maintain battlefield assistance while Ukrainian forces face sustained Russian attacks.