Continuing:
Cloak and Dagger
After the war Burke was recruited by Warner Brothers to be a technical advisor for Fritz Lang's O.S.S. film Cloak and Dagger. Burke had a bit part in the film but it was cut during editing. During the filming he met Henry Ringling North's sister who he later married. During the filming Burke and a fellow OSS agent Andreas Diamond met at Lang's home to discuss various methods of killing someone with your bare hands and were seen rolling around the floor to design a fight scene with OSS methods for the film. A Warner Bros memo records the fact that the fight scene was the only scene that Gary Cooper, who had problems with the scientific dialgoues his character had to say, did well during the film.

C.I.A.
When Burke's screenwriting career didn't pan out he was recruited into the C.I.A. after lunch in the Algonquin Hotel serving in Rome and other parts of Europe for five years. Burke was allowed to use the cover of working for Warner Brothers whilst he was doing various scouting and liaision missions in Europe. Using his experience with French Resistance groups in the War, Burke was given the mission to "Recruit a limited number of refugees, train them as agents and place them clandestinely back on their native soil. There they would seek out any incipient resistance elements that might exist" behind the Iron Curtain.

In 1949 he replaced Robert Low as the American officer in charge of setting up paramilitary and political operations in Albania. Following Albania Burke worked on Polish anti Soviet resistance operations and tested Soviet radar capabilities by using Polish pilots.

Burke served as an intelligence and special operations adviser to John J. McCloy, the United States High Commissioner in Germany, from 1951 to 1954.

Post CIA
Following his CIA career, Burke's brother-in-law and comrade in arms John Ringling North hired him for the [Ringling Bros. and Barnum & Bailey Circus as an executive director. Though new to the circus world Burke found himself battling cheating ushers and Jimmy Hoffa's Teamster Union.

CBS
When his friend North hired a manager Burke didn't like, Burke left the big top and met Frank Stanton of CBS. Burke's European knowledge led him to be sent back to Europe to develop television programs, eventually becoming the President of CBS Europe. Burke was summoned back to America as Vice President in charge of Diversification. One of Burke's accomplishments was recommending CBS purchase the rights to the play My Fair Lady.