Ukrainian President Volodymyr Zelenskyy responded, calling Biden a "true leader.".
The UN estimated Tuesday that there were at least 1,892 deaths and 2,558 injuries in Ukraine.
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Ukrainian President Zelenskyy called US President Joe Biden a "true leader" for labeling Russia's attacks on Ukraine a "genocide.".
Just a week prior to changing his language, Biden had held out from using the word genocide and instead discussed "war crimes.".
But during a speech Tuesday in Iowa about lowering gas prices, Biden appeared to shift his rhetoric.
Zelenskyy commended Biden for his words in a tweet later Tuesday evening. »