The U.S. envoy to the OSCE warned at a meeting of the organization's Permanent Council on January 26 that Russia is trying "to wipe out the sovereignty of an entire, independent nation" in Ukraine.
Ambassador Michael Carpenter added that Russia was also seeking to do much the same thing with neighboring Belarus, following a historical pattern of denying the existence of sovereign nations and trying to "incorporate them into their empires."
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He said Russian President Vladimir Putin had "made clear" that he thinks both those nations "belong" to Russia.
"The United States flatly rejects Russia's efforts to dismiss and repress Ukraine’s distinct culture, history, and statehood," Carpenter said. "We also strongly support the sovereignty and independence of Belarus, which has a proud history and its own rich culture as well."
Putin's forces covertly occupied Crimea ahead of its annexation in 2014, when Russia-backed armed separatists also captured wide swaths of eastern Ukraine.
After massing Russian troops at the Ukrainian borders with Russia and Belarus in late 2021 and early 2022, Putin ordered tens of thousands of soldiers and armored vehicles to launch a full-scale invasion on February 24.
Ukrainian officials have chronicled what they say are tens or hundreds of thousands of atrocities and other abuses against civilians, and international war crimes investigators are documenting many allegations along with physical evidence in formerly occupied territory.
Carpenter said that "Putin’s language and view of Ukraine and its people is essential to understanding the brutal conduct of Russia’s forces in Ukraine."
The Kremlin leader has increased pressure on Belarusian strongman Alyaksandr Lukashenka since the latter declared himself the winner of sixth term in a flawed presidential election in 2020, a vote that sparked massive street protests and Western condemnation.
Lukashenka has been further isolated internationally since allowing Russian troops to stage their invasion from Belarusian soil.
"Russia's leadership has openly and repeatedly professed the belief that Ukrainian and Belarusian identity do not exist outside of Russian culture," Carpenter told the OSCE Permanent Council.