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.

The industial espionage unit provides detailed description of the supplied equipment and blueprints.

The memo focuses on the operations of the French intelligence services in Bulgaria during the late 1950s.

A report on the progress of agent recruitment.

Proposed measures for disrupting the alleged intelligence cooperation among Western military attachés in Sofia.

Report on the work of Turkish intelligence services in Bulgaria.