Ukraine’s forces have been hamstrung by President Joe Biden’s restrictions on the use of U.S. weapons to strike Russian military targets, according to Ukrainian President Volodymyr Zelensky.

“When Putin decided to break everything, everything dear to us, we all acted as one… and we did survive. Then the world saw that Putin could lose and democracy can win — can win, even when it seemed impossible,” Zelensky said at the Reagan Institute on the sidelines of the NATO summit in Washington, D.C. “Then, what happened now? When did it step into the shadows? When did one start thinking that it’s better to delay than act — that partial solutions are better than better than victory?”