There is a belief within the US administration that Mikoyan was not successful in convincing Fidel Castro to adopt a Soviet point of view.

Arthur Schlesinger, advisor to President Kennedy, confirms Drozniak's previous telegram report that " In [Schlesinger's] opinion, the assessment of the Soviet installation of the missiles in Cuba as the attempt to strengthen the [world] position of the USSR before a possible confrontation over Berlin, ended up prevailing within the US administration."

Drozniak compiles information he has collected from US Deputy Assistant Secretary of State for European Affairs William R. Tyler and US Ambassador at Large Llewellyn E. Thompson on the rising Cuban situation and US-USSR relations.

Drozniak forwards a report from US Assistant Secretary of State for Inter-American Affairs [Edwin M.] Martin. Martin says that the Americans are well-informed of the military situation in Cuba, that Cuba does not possess nuclear weapons (nor will they be likely to because the USSR did not give such weapons to China, so why would they give them to Cuba?), that the level of the Cuban economy is twenty-five percent lower than the period before Fidel Castro came to power and Cuba is much more economically dependent on the USSR, and finally that any military invasion or complete blockade of Cuba would be considered an act of war by the USSR.