BRUSSELS (AP) — European leaders have praised President Donald Trump for agreeing to allow vital U.S. backup for a force they are mustering to police any future peace in Ukraine — a move that vastly improves the chances of an operation that could prove essential for the country’s security.

Ukrainian President Volodymyr Zelensky quickly denounced the idea of giving up territory to Russia in a video address on Saturday, vowing that Ukraine would not “gift their land to the occupier” and warning that any peace talks that didn’t involve Kyiv would “bring nothing.”