I Killed Stalin

A shabbily dressed man walked out of a New York office building with orders to kill a certain man, no matter how long it took or whose life might pay for it. He had been given the most dangerous job of all time, sent on an assignment of espionage, armed robbery and murder that was to lead from an A-bomb plant in Virginia to an MVD charnel house in Moscow to a pleasure palace in Crimea.

AND THE MAN MARKED FOR DEATH WAS JOSEPH STALIN