Members of the Nassau Decisions Steering Group worked up the texts of letters from Secretary of Defense Robert McNamara to the Italian and Turkish Defense Ministers, which President Kennedy approved when he met with Dean Rusk and Thomas Finletter in Palm Beach on January 5, 1963. The State Department sent the letters later to Ankara and Rome later that day.

McNamara’s letters expand on the points about the need to replace Jupiters with Polaris missiles that he made to Andreotti and Sancar when he met them in Paris. To both, McNamara wrote that the Polaris force would be “on station” by April 1 as the replacement for the Jupiters. Writing to Andreotti, he also mentioned substituting “obsolete” Corporal with Sergeant missiles. In his message to Sancar, McNamara informed him that he is exploring the possibility of accelerated delivery of the F-104s and that “emergency actions” could make it possible to deliver the first squadron during April 1963.

Seymour Weiss would push back against any efforts to remove the Jupiters, but he and others realized that President Kennedy had a “keen interest” in the matter and that Secretary of Defense McNamara had ordered that action be taken (assigning his General Counsel John McNaughton to take the lead). Nevertheless Weiss and Assistant Secretary of State William Tyler presented Secretary of State Rusk with a memorandum making the case against action on the Jupiters or at least postponing their removal until a “later time.” Paralleling arguments made during the crisis by Ambassadors Hare and Reinhardt, Tyler pointed to the “symbolic and psychological importance” of the Jupiter deployments. While Tyler noted parenthetically that the Italians had “given indications of a disposition to work toward the eventual removal of the Jupiters,” the U.S. could not phase them out “without general Alliance agreement,” including Italy and Turkey’s consent, “unless we are prepared to lay ourselves open to the charge of abrogation of specific or implied agreements.” Rusk was in the know on the secret deal, but his reference to a “later time” was consistent with it and signing the memo would have placated Tyler and Weiss.