John Sullivan, who served as U.S. ambassador to Russia as President Vladimir Putin invaded Ukraine and returned full-scale war to the European continent, has left his post and departed Moscow, the U.S. Embassy in Moscow said in a statement Sunday.
"Following his departure, he will retire from a career in public service that has spanned four decades and five U.S. presidents, including service as the Deputy Secretary of State and in senior positions at the Departments of Justice, Defense, and Commerce," the statement said.
Sullivan's retirement was abrupt, and there had been no prior indication it was imminent. He was appointed U.S. ambassador to Russia by former president Donald Trump in December 2019 and served for nearly three years after President Biden asked him to stay on.
During Sullivan's tenure, relations between Russia and the United States -- and between Russia and most of the Western world -- reached their worst point at least since the end of the Cold War. The United States warned for months that Russia was planning to invade its neighbor, but Putin was undeterred and warned of "consequences greater than any you have faced in history" should other countries interfere. The war has also raised fears that Russia could use a nuclear weapon.
On Saturday, Sullivan had attended the Moscow funeral of Mikhail Gorbachev, the former Soviet leader, whom he described as "a statesman who changed the world through his vision of peaceful coexistence and transformation in his country and the rest of the world."
A State Department official and a Biden administration official, who both spoke on the condition of anonymity to discuss sensitive matters, confirmed Sullivan's departure.
"Ambassador Sullivan's departure is planned and part of a normal diplomatic rotation," the State Department official said. "He has served a full tenure as U.S. Ambassador to Russia, managing one of the most critical bilateral relationships in the world during unprecedented times. The U.S. will continue to condemn unequivocally the Kremlin's aggressive war against Ukraine and remain steadfast in our commitment to supporting Ukraine's sovereignty and territorial integrity."
Elizabeth Rood, the deputy chief of mission at the U.S. Embassy in Moscow, will assume duties as charge d'affaires there until Sullivan's successor arrives, the U.S. Embassy said. Last month, Rood was nominated to be the U.S. ambassador to Turkmenistan and is awaiting Senate confirmation to that post.
Sullivan arrived in Russia in January 2020, just before the end of Trump's term in office, during a time when relations between the United States and Russia were already tense.
Though he was involved in many major policy and management decisions, Sullivan was best known to the public as the State Department official who told Marie Yovanovitch, the former U.S. ambassador to Ukraine, that she had been yanked home prematurely not because she had done anything wrong but because Trump simply "lost confidence" in her.
Information for this article was contributed by Carol Morello, Missy Ryan and Ashley Parker of The Washington Post.