A top aide to Volodymyr Zelenskyy praised Biden in a tweet Thursday.
Biden "does more" for Ukraine "than any of his predecessors," Andriy Yermak wrote.
Former President Trump was impeached for withholding military aid from Ukraine for political reasons.
A top aide to Ukrainian President Volodymyr Zelenskyy praised US President Joe Biden on Thursday.
Trump also asked Zelenskyy to investigate the nonsense conspiracy theory that Ukraine interfered in the 2016 election, and that Ukraine is in possession of a secret Democratic email server.
Yermak, as a senior advisor to Zelenskyy, was privy to Trump's and his aides' efforts to force Ukraine to investigate the Bidens.
Trump was repeatedly criticized throughout his presidency for making public statements and policy decisions that benefited Russia and hurt Ukraine. »