MOSCOW (AP) — Alexander Darchiev, the Russian ambassador to the United States, has passed away at the age of 66. The Russian Foreign Ministry confirmed his death in an online statement, revealing that he succumbed to an unspecified chronic illness in Moscow.

Maria Zakharova, the ministry spokeswoman, emphasized Darchiev's many accomplishments, describing him as “an outstanding diplomat, experienced leader, good comrade and mentor,” while also acknowledging his expertise as a scholar in U.S. affairs. Zakharova noted that Darchiev’s work was significant within one of the most critical areas of Russian foreign policy.

Darchiev had served as Russia's ambassador to the U.S. since early 2025, taking up the role after Anatoly Antonov was relieved of his duties in late 2024. Prior to his ambassadorship, Darchiev led the North America and North Atlantic departments at the Russian Foreign Ministry and held the position of ambassador to Canada. Furthermore, he was a minister-counselor at the Russian embassy in Washington.

In February 2025, Darchiev played a key role in international diplomacy by heading the Russian delegation in negotiations with the United States that took place in Istanbul. His extensive experience in diplomacy and international relations made him a prominent figure in Russian foreign policy circles.

The reaction to Darchiev's passing echoes sentiments expressed during the sudden death of another notable Russian diplomat, Vitaly Churkin, who was Moscow’s envoy to the U.N. and died unexpectedly in February 2017 at the age of 64. At the time of his death, Churkin was recognized as the longest-serving ambassador on the U.N. Security Council, a position he had held since 2006. Foreign Minister Sergey Lavrov had praised Churkin as an “exceptional professional and people's diplomat,” highlighting the level of respect held for Russia's diplomatic corps.

As of now, the Russian Foreign Ministry has not specified the date or location of Darchiev's funeral. Zakharova mentioned that further details regarding a memorial service will be communicated in due course.

The passing of Alexander Darchiev highlights the ongoing changes within Russia’s diplomatic landscape and reflects the challenges and responsibilities faced by diplomats in navigating international relations, particularly with the United States.