Boissevain reports on Fidel Castro. During a banquet held by the Egyptian ambassador, Castro speaks to Swiss Ambassador Masset of a decision to nationalize the former building of the U.S. embassy, currently in use by the Swiss embassy acting as U.S. representatives. Castro is noted as having "the air of one who is boasting to a trusted friend about how he has crossed an opponent." Boissevain thinks it best to keep on Castro's good side and requests an illustrated work of the Netherlands to be sent as a gesture of goodwill.

Boissevain writes in continuation of the previous cable regarding Castro's desire for a mediator in an agreement with the United States. The Swiss or Czech ambassadors are offered as alternatives by Boissevain. Castro also notes that the Cuban debt to the Soviet Union is far to large, although he still wishes to continue revolution, creating this impasse between Cuba and the United States.

Boissevain writes of a conversation Fidel Castro had with his wife, namely about how some ideals cannot translate into reality. Castro is interested in pursuing an agreement of some kind with the United States, and seeks to use Boissevain as the middle man. Boissevain is hesitant about any kind of deal with Castro, and asks for instructions on how to proceed.

Boissevain writes of the continued presence of Russian military and economic advisors in Cuba, which are causes for concern. The ongoing question is for how long they will remain in Cuba and when do they leave. Boissevain says that last week approximately 1,000 advisors left the country, but with some note of resistance. However, the departure for them is a great relief for the average Cuban and Russian alike.

In this letter to Amsterdam, Dutch Ambassador to Cuba Boissevain remarks on how the American blockade of Cuba can effect Dutch trade in the Caribbean. He compares the situation to the one faced Japan and the Yellow Sea in the early 20th Century: Japanese control of the sea north of Shanghai strangled international shipping, and the British Navy was unable (or unwilling) to keep the Japanese in check. Boissevain decries the blockade of Cuba as foolhardy and says Washington risks losing the support of NATO over this.

A letter from Gideon Boissevain, the Dutch Ambassador to Cuba reporting to Amsterdam. The letter primarily concerns the press coverage in Cuba of the rising crisis. Particular attention is paid to the Soviet guarantees of Cuban security and the American responses to the discovered missiles. In Cuba there is fear of an invasion by the United States making use of foreign legionnaires, despite Kennedy's claims there is no plan for an attack on Cuba.