Although the Mexican denuclearization plan for Latin America has won appreciation from Secretary-General U Thant, some Latin American countries were tepid in their response.

Mexico proposed that all Latin American countries ban the installations of nuclear bases on their soil.

The US ratified additional protocol I to the Treaty of Tlateloco for the non-proliferation of nuclear weapons in Latin America.

The creation of denuclearized and limited armaments zones is a first step towards general and complete disarmament

The Chinese Ambassador to Vietnam reports that the United States is working through the United Nations to prevent Puerto Rico, Guantanamo, and its others holdings in Latin America from being included in any "Latin America Nuclear-Free Zone." The Ambassador suggests that this is an attempt to distract Latin American citizens from their campaign against American military bases in the region.

The memorandum includes topics discussed between CPCz Secretary Vladimír Koucký and Cuban government official Carlos Rafael Rodríguez. Rodríguez lists points of misunderstanding between Cuba and other socialist countries. Discussion topics include Chinese publications in Cuba, Cuba's unique approach to socialist revolution, the proposed nuclear-free zone in Latin America, and building socialism under various conditions (e.g. Islam's role in Algeria), among others. Rodríguez encourages more communication among socialist nations to prevent misunderstanding.

Hungarian Chargé d’Affaires János Radványi reports on Anastas Mikoyan’s visit to Washington, DC. After a brief description of Mikoyan’s Washington itinerary, the report is divided into three sections: Mikoyan’s impressions of his meetings with American officials, meetings in Cuba with Cuban officials, and meetings about different socialist countries (e.g. China, Hungary). Primary subjects discussed include the presence of missiles in Cuba, nuclear proliferation and Latin America as a nuclear free region, missile bases, and the Berlin issue.

A conversation between Pinto and Raul Roa discussing denuclearization of Latin America and the dismantling of bases like Guantanamo. Pinto also writes that the denuclearization of Africa was an initiative of Fidel Castro in the UN in 1960, and he praised the Brazilian draft, saying that, with the Cuban amendments, it would be an effective guarantee for Latin America and an important step toward disarmament and the suspension of nuclear tests.