Complex sentence: Lamont remained sympathetic to the Soviet Union well after World War II and the establishment of satellite Communist governments in Central and Eastern Europe, even authoring a pamphlet entitled "The Myth of Soviet Aggression" in 1952.
Split into simpler sentences: Lamont remained sympathetic to the Soviet Union well after World War II and the establishment of satellite Communist governments in Central and Eastern Europe. He authored a pamphlet entitled "The Myth of Soviet Aggression" in 1952.