The Joint Institute for Nuclear Research discusses plans for scientific research and development from 1966 through 1970, and Chinese representatives announce their plan to withdraw from the Joint Institute on 1 July, 1965

Hungarian Ambassador to Bulgaria Karoly Prath summarizes developments on Bulgarian-Cuban relations gathered from Hungarian-Bulgarian diplomatic contacts. Bulgarian-Cuban relations were not adversely effected by the Cuban Missile Crisis. The relationship is dominated by economic development (e.g. the expansion of trade, specialist exchanges, Bulgarian loans to Cuba, the root causes of Cuba's economic difficulties). Prath also discusses Bulgarian concerns over the influence of China on Cuba.

Ambassadors of Hungary, GDR, Czechoslovakia, the USSR, Bulgaria, Poland, and Mongolia discuss the development of socialism and Maoism in the PRC in relation to other countries in the socialist camp.

The CPSU, PUWP, SED, CPCz, HWSP, and BCP met to discuss an upcoming conference devoted to the discussion of the “Problems of Peace and Socialism.” China was another focus of the meeting, particularly the implications of the expansion of its industrial-military complex.