President-elect Donald Trump announced Wednesday that retired Gen. Keith Kellogg will serve as his assistant and special envoy for Russia and Ukraine. Kellogg, who previously held key national security roles in Trump’s first administration, will focus on resolving the ongoing Ukraine conflict.

Donald Trump picked retired General Keith Kellogg as his special envoy for Ukraine and Russia, choosing a longtime adviser who’s supported the president-elect’s aims to end the war swiftly, including by potentially cutting off military aid to Kyiv.