Ukrainian President Volodymyr Zelensky appears to be at his most perilous crossroads in nearly four years of sustained war: agree to the Trump administration’s new proposal to end the war or risk losing U.S. support moving forward.

“The pressure on Ukraine is now at its most intense. Ukraine may now face a very difficult choice: either the loss of dignity, or the risk of losing a key partner, or 28 difficult points, or an extremely harsh winter,” Zelensky said in a video address on Friday, referencing the U.S.’s 28-point plan to end the conflict.