Kurt Volker, Trump’s Envoy for Ukraine, Resigns

WASHINGTON — Kurt D. Volker, the State Department’s special envoy for Ukraine, who got caught in the middle of the pressure campaign by President Trump and his lawyer, Rudolph W. Giuliani, to find damaging information about Democrats, resigned his post on Friday.

Mr. Volker, a former ambassador who served in the part-time, unpaid position to help Ukraine resolve its armed confrontation with Russia-sponsored separatists, told Secretary of State Mike Pompeo on Friday that he was stepping down.

His departure came just days after Mr. Trump’s efforts to pressure Ukraine’s president to investigate former Vice President Joseph R. Biden Jr. and other Democrats came to light and triggered a full-blown House impeachment inquiry. House leaders announced on Friday that they would interview Mr. Volker in a deposition next week.