Behind the Whistleblower Case, a Long-Held Trump Grudge Toward Ukraine

WASHINGTON -- For months this spring and summer, Ukraine's newly elected president, Volodymyr Zelenskiy, tried to deflect pressure from President Donald Trump and his allies to pursue investigations into former Vice President Joe Biden, Biden's son and other Trump rivals.The pressure was so relentless that Zelenskiy dispatched one of his closest aides to open a line of communication with Rudy Giuliani, one of Trump's personal lawyers. Giuliani was the loudest voice among those demanding that Ukr