Ukrainian President Volodymyr Zelenskiy, who found himself at the center of President Donald Trump's impeachment, is congratulating Trump's replacement, President-elect Joe Biden.
In a Saturday tweet, Zelenskiy said "Ukraine is optimistic about the future of the strategic partnership with the United States." He added that the two countries "have always collaborated on security, trade, investment, democracy, fight against corruption. Our friendship becomes only stronger!"
A 2019 call from Trump to Zelenskiy, in which he asked the new Ukrainian leader to investigate Biden and the Democratic National Committee, sparked an intelligence community whistleblower complaint that resulted in Trump's impeachment last year.