In his 20 years of service he had never been so ashamed of his country as he was for its aggressive war.
Boris Bondarev, who was a counsellor at the Permanent Mission of the Russian Federation to the United Nations, wrote a letter to his colleagues.
Bondarev said that Russian Foreign Minister Sergei Lavrov was a good example of the degradation of the government.
Bondarev said he couldn't share in this bloody, witless and absolutely needless ignominy.
He confirmed his resignation to the Associated Press, but did not respond to a request for comment from Forbes.
Russia's Mission to the UN in Geneva said it would issue a statement soon.
The aggressive war unleashed by Putin against the Ukrainian people, and in fact against the entire Western world, is not only a crime against the Ukrainian people, but also the most serious crime against the people of Russia, with a bold letter Z crossing out all hopes.
The letter is one of the strongest criticisms of Russia's war efforts from within its government. The most senior official to leave when Anatoly Chubais quit was the former Russian climate envoy. According to the New York Times, Bondarev said he should have resigned at the beginning of the Russian invasion, but he delayed the move to resolve family issues. In his letter, Bondarev said he had seen a rise in lies and unprofessionalism within the Foreign Ministry. A Department of Defense official told reporters last week that the size of Russian offensive operations may be decreasing.
The Russian diplomat resigned because of Putin's aggressive war.
The Russian diplomat resigned over the war.