The Trump administration has paused parts of its military aid to Ukraine after reviewing domestic weapons stockpiles, raising concerns about U.S. military readiness. The White House and Pentagon confirmed the decision on Tuesday.

“This decision was made to put America’s interests first following a review of our nation’s military support and assistance to other countries across the globe,” said White House spokesperson Anna Kelly.

The move follows a recent Pentagon assessment initiated by U.S. Defense Secretary Pete Hegseth. The review found that U.S. stockpiles, especially of certain high-demand weapons, have become critically low after years of supplying Ukraine, as well as recent operations in Yemen and against Iran.

Pentagon policy chief Elbridge Colby said the Department of Defense is adjusting its strategy to continue supporting Ukraine while safeguarding U.S. defense priorities. “We’re providing the president with options that advance the goal of ending the war, while preserving the readiness of U.S. forces,” he noted.

Despite the pause, the administration has signaled a willingness to provide Ukraine with Patriot air defense systems. After a meeting with Ukrainian President Volodymyr Zelensky at the NATO summit in The Hague last week, President Trump said Kyiv is “eager” to acquire Patriot missiles, though added, “We need them, too.”

The Pentagon’s shifting stance is raising speculation that further cuts in military aid may follow. Notably, Defense Secretary Hegseth skipped a key international meeting last month aimed at coordinating support for Ukraine—marking the first time a U.S. defense chief was absent.

Since the outbreak of the Russia-Ukraine conflict in February 2022, the U.S. has provided over $66 billion in military assistance to Ukraine, according to official figures.