On 5 July 1963 the Bulgarian Ministry of Internal Affairs completed an information report on NATO's activity during the Cuban Missile Crisis. In the report, the ministry outlines detailed espionage carried out by NATO agents. According to the report, the NATO Military Intelligence Services provided instructions for NATO member-states' military attaches stationed in Warsaw Pact countries and agents they could get to cooperate with them. Agents were to observe and report specific military intelligence collecting in Warsaw Pact countries -- arms deliveries, missile sites, military movements, etc. The report also includes explanation of how the attaches carried out their intelligence gathering -- reading official press, speaking in Russian and misrepresenting themselves as Russian, etc . The Bulgarian Interior Ministry notes that Western governments were well-informed of Bulgarian military structures -- including exact formations and secret designations.

A letter summarizing the activity of US journalist Oscar Edward Boleen during his stay in Bulgaria. The author of the letter expresses the assumption that Boleen is an agent under cover who is posing as a correspondent of the US magazine "Made in Europe," while being associated with the US intelligence service.

The report covers the work of Bulgarian intelligence operatives in the West for the last 18 months. Includes statistics by country.

The Bulgarian Minister of Internal Affairs informs the Soviet State Security Committee Chief about a forthcoming meeting in Vienna where US officials will discuss consular issues