A catalog of indicators of NATO preparation for nuclear war that were monitored by Warsaw Pact intelligence services under Project RYaN. The activity is divided into the following areas: political and military, activities of intelligence services, civil defense, and economic.

This speech by East German Minister of State Security Mielke is about technological, intellectual, and ideological preparations for war by the west and how to uncover and organize indicators of a potential attack.

This report by Ministry of State Security describes developments and achievements toward early recognition of a surprise nuclear missile attack on the USSR (Complex RYAN).

This document is a plan for the consultations to take place in Berlin between the Stasi and the KBG. It includes objectives and proposed theses on the subject of early recognition of a sudden nuclear missile attack by the adversary.

This letter, from East German Minister of State Security Mielke to KGB Chairman Chebrikov, requests a consultation on the development and continuation of Complex RYAN, especially on furthering collaboration between the MfS and KGB.

These notes describe statements made by Colonel General Kryuchkov which outline the current state of Soviet institutions and intelligence networks in various regions, including Western Europe, Africa, the Middle East, and the United States.

This report describes conversations with Comrade Kryuchkov, coving a multitude of subjects, but delving briefly into the problem of "prevention of a surprise nuclear attack" (RYAN). Kryuchkov responded that this issue is being continually worked on, but no central decisions had been made as of yet.

This note on the talks between Minister Wolf and KGB Chairman Chebrikov contains heartfelt congratulations on cooperation thus far, but it also highlights problems with the situation and the importance of utilizing the potential of all fraternal organs to detect and prevent hostile plans and measures.

This brief note written by the Ministry of State Security includes a number of questions for the leadership of the KGB in the USSR, such as whether other elements, like military doctrine or emergency responses, should be examined as possible options for starting a war.

Meetings between KGB Chairman Semichastny and East German Minister for State Security Mielke. Topics of discussion include Lyndon B. Johnson's recent election in the United States, Khrushchev's ouster from the Kremlin, Sino-Soviet relation, and Khrushchev's son-in-law Alexei Adzhubei.