WASHINGTON – The Biden administration announced a $1 billion security assistance package for Ukraine on Monday, the largest weapons installment yet since Russia's full-scale invasion began in late February.

The package consists of additional ammunition for High Mobility Artillery Rocket Systems or HIMARS, 75,000 rounds of 155 mm artillery ammunition, 20 120 mm mortar systems and 20,000 rounds of 120 mm mortar ammunition as well as munitions for National Advanced Surface-to-Air Missile Systems or NASAMS.

Until now, the largest Ukraine assistance package was announced on June 15 but that installment was a mixture of presidential drawdown authority and the Ukraine Security Assistance Initiative.