The Putin Confidant Who Pushed Back Against Russia’s War in Ukraine NYT | Top Stories By: Anton Troianovski 18 December 2025 at 18:53 Dmitri N. Kozak had worked with President Vladimir V. Putin for three decades before quitting in September. His associates described his break with the Russian leader. © Dumitru Doru/EPA, via ShutterstockDmitri N. Kozak, then a deputy prime minister of Russia, in 2019. Early in Russia’s invasion of Ukraine, he was a rare voice of dissent.
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