As the Cuban Missile Crisis subsided in late 1961, Henry Kissinger's influence within the White House diminished significantly. The political landscape shifted, leading to his eventual departure from his role. In October, Kissinger packed up his office, indicating the end of his tenure in the administration.

His exit was marked by a formal note of gratitude from McGeorge Bundy, which, while acknowledging Kissinger's service, indicated that the White House chose not to publicly announce his resignation. This decision reflected the shifting priorities and dynamics of the administration at that time.