Biden signs off on $500M Ukraine security package before leaving office.

On Thursday, the Biden administration announced a $500 million military aid package for Ukraine, which was rushed through before President-elect Trump's inauguration.

At Ramstein Air Base in Germany, Defense Secretary Lloyd Austin and Ukrainian President Volodymyr Zelenskyy met for the last time. During their meeting, they both emphasized the importance of the incoming Trump administration continuing to support Ukraine's efforts to combat Russia.

"Putin's appetite for Ukraine will continue to grow if he swallows it," Austin warned at the 25th meeting of about 50 member nations who have joined forces to support Ukraine with an estimated $122 billion in weapons and support.

"If autocrats believe that democracies will give up their values, surrender their rights, and lose their resolve, we will witness more territorial claims. If tyrants discover that violence brings rewards, we will only encourage more violence, instability, and conflict."

The latest U.S. security aid to Ukraine includes missiles for fighter jets, support equipment for F-16s, armored bridging systems, small arms and ammunition, as well as spare parts and communications equipment.

The weapons package for Ukraine will be funded through the presidential drawdown authority (PDA), allowing for the rapid delivery of weapons from U.S. stockpiles.

The Biden administration has provided its seventy-fourth batch of equipment from Defense Department inventories to Ukraine since August 2021, according to officials.

The Biden administration has $3.85 billion in funding left for future arms shipments to Ukraine. If no further announcements are made, this balance will be available to Trump to send if he chooses.

Zelensky urged the next U.S. administration to maintain its support for Ukraine's defensive war against Russian aggressors.

"We've made significant progress, and it's unbelievable to abandon our defense alliances now," Zelenskyy stated. "Regardless of global events, people want to ensure their country's survival on the map."

The U.S. and other coalition members have increased weapons production in support of Kyiv since it was revealed that stockpiles were insufficient for a significant conventional land war following the Ukraine conflict.

Since February 2022, the U.S. has given approximately $66 billion in aid to Ukraine, with between 80% and 90% of that total already delivered.

""If we retreat, Putin will push further and punch harder, putting not only Ukraine's survival but also the security of Europe, the United States, and the world at risk," Austin said Thursday."

The Associated Press contributed to this report.