Ukrainian President Volodymyr Zelensky has dismissed Ukraine's ambassador to the United States, Olha Stefanishyna, according to a decree published by the presidential office on Monday.

Ukrainian Ambassador to the United States Olha Stefanishyna testifies during a Senate Appropriations Subcommittee on State, Foreign Operations and Related Programs hearing on Capitol Hill, in Washington, DC on December 3, 2025. (Photo: AFP)

Stefanishyna, who had served as ambassador since last year, said in a Facebook post that she had requested to be relieved of her duties for personal reasons. She described her service in Washington as "the greatest honor" of her life.

"We have increased the supply of American weapons and maintained support precisely when the political environment in Washington was not in our favor," she added.

Zelensky has not announced a successor to the post.

The move comes after a government reshuffle launched by Zelensky in July and at a time when Kiev is seeking continued U.S. military support amid its conflict with Russia.

Recent contacts between Zelensky and U.S. President Donald Trump have focused on air defense cooperation and diplomatic efforts to end the Ukraine-Russia conflict.