Washington. The United States will provide Ukraine additional Patriot missiles for its air defense systems as part of a massive $6 billion additional aid package, Defense Secretary Lloyd Austin announced Friday.

The missiles will be used to replenish previously supplied Patriot air defense systems and are part of a package that also includes more munitions for the National Advanced Surface-to-Air Missile Systems, or NASAMS, and additional gear to integrate Western air defense launchers, missiles and radars into Ukraine's existing weaponry, much of which still dates back to the Soviet era.

Ukrainian President Volodymyr Zelensky discussed the need for Patriots early Friday at the Ukraine Defense Contact Group, a coalition of about 50 countries gathering virtually in a Pentagon-led meeting. The meeting fell on the second anniversary of the group, which Austin said has “moved heaven and earth” since April 2022 to source millions of rounds of ammunition, rocket systems, armored vehicles and even jets to help Ukraine rebuff Russia's invasion.

Zelensky said at least seven Patriot systems are needed to protect Ukrainian cities. “We urgently need Patriot systems and missiles for them,” Zelensky said. “This is what can and should save lives right now.”

At a Pentagon press conference following the meeting, Austin said the US was continuing to work with allies to resource additional Patriot systems but did not commit to sending more US versions.

“It's not just Patriot that they need, they need other types of systems and interceptors as well,” Austin said. “I would caution us all in terms of making Patriot the silver bullet.”

US officials said the aid package will be funded through the Ukraine Security Assistance Initiative, which pays for longer-term contracts with the defense industry and means that it could take many months or years for the weapons to arrive. The officials spoke on the condition of anonymity to discuss details not yet made public.

The new funding -- the largest tranche of USAI aid sent to date -- also includes High Mobility Artillery Rocket System, or HIMARS, as well as Switchblade and Puma drones, counter-drone systems and artillery.

The Ukraine Defense Contact Group has been meeting about monthly for the past two years and is the primary forum for weapons contributions to Kyiv for the war.

Since Russia’s February 2022 invasion, the US has sent more than $44 billion worth of weapons, maintenance, training and spare parts to Ukraine.

Among the weapons provided to Ukraine were Abrams M1A1 battle tanks. But Ukraine has now sidelined them in part because Russian drone warfare has made it too difficult for them to operate without detection or coming under attack.