Rockefeller was acquainted with Central Intelligence Agency (CIA) director Allen Dulles and his brother, Eisenhower administration Secretary of State John Foster Dulles—who was an in-law of the family—since his college years. It was in Rockefeller Center that Allen Dulles had set up his WWII operational center after Pearl Harbor, liaising closely with MI6, which also had their principal U.S. operation in the Center. He also knew and associated with the former CIA director Richard Helms as well as Archibald Bulloch Roosevelt Jr., a Chase Bank employee and former CIA agent whose first cousin, CIA agent Kermit Roosevelt Jr., was involved in the Iran coup of 1953. Also in 1953, he had befriended William Bundy, a pivotal CIA analyst for nine years in the 1950s, who became the Agency liaison to the National Security Council, and a subsequent lifelong friend. Moreover, in Cary Reich's biography of his brother Nelson, a former CIA agent states that David was extensively briefed on covert intelligence operations by himself and other Agency division chiefs, under the direction of David's "friend and confidant", CIA Director Allen Dulles.