The United States plans to end military aid to European countries close to Russia, amid pressure from the Trump administration for Europe to become more involved in its own defense, US media reported Thursday.

Six sources familiar with the matter confirmed the move to the Washington Post, which the newspaper said would affect hundreds of millions of dollars in aid intended to strengthen defenses against Russia.

The Financial Times said US officials briefed European diplomats last week about Washington's decision to suspend funding for programs to train and equip Eastern European militaries along the border with Russia.

A White House official mentioned a January Trump executive order re-evaluating US foreign aid, but did not confirm details of the decision to cut security assistance.

“This move has been coordinated with European countries in accordance with the executive order and the president’s ongoing emphasis on ensuring that Europe takes a greater responsibility for their own defense,” the official said on condition of anonymity.

The decision to reduce assistance to Russia’s neighboring countries comes as Trump struggles to end Russia’s invasion of Ukraine, which Moscow ordered in February 2022.

Trump has long been skeptical of both U.S. defense spending in Europe and aid to Ukraine, and has pressed some of Washington’s closest allies to play a larger role on both fronts.