U.S. President Donald Trump has frozen military aid to Ukraine, just days after publicly confronting Ukrainian President Volodymyr Zelenskiy at the White House and accusing him of being insufficiently grateful for Washington's backing.

Ukraine has received over $287 billion in aid since January 2022, when the United States and European allies scrambled to fly in equipment to help stave off an invasion by Russia’s army, which stood ready to strike along Ukraine’s borders.