The Helsinki Agreement, also known as the Helsinki Accords, was signed in Helsinki, Finland on August 1, 1975. The agreement was a result of the Conference on Security and Cooperation in Europe, which was attended by 35 states, including the United States, Canada, and the Soviet Union.

The signatories of the Helsinki Agreement included the members of the Warsaw Pact and NATO, as well as non-aligned countries such as Finland, Sweden, and Austria. The agreement consisted of three main sections: security; economic, scientific, and technical cooperation; and human rights and fundamental freedoms.

The security section of the agreement aimed to reduce tensions between the two sides of the Cold War by promoting confidence-building measures, such as the exchange of military information and visits by military personnel. The economic section aimed to promote trade, scientific cooperation, and the free flow of information between the participating states.

However, the most significant section of the Helsinki Agreement was the human rights section, which recognized the universal nature of human rights and fundamental freedoms. The section affirmed that states must respect and protect the human rights of their citizens, including freedom of thought, conscience, and religion; freedom of expression and information; and freedom of peaceful assembly and association.

The signing of the Helsinki Agreement was a critical moment in the history of the Cold War. It marked a significant step towards easing tensions between the two superpowers and promoting peace and cooperation in Europe. However, the implementation of the human rights section of the agreement was not immediate, and it took several years for some countries to fully comply.

In conclusion, the Helsinki Agreement was signed by 35 states, including the members of the Warsaw Pact and NATO, as well as non-aligned countries. The agreement aimed to promote security, economic cooperation, and human rights and fundamental freedoms. Its signing was a critical moment in the history of the Cold War and marked a significant step towards promoting peace and cooperation in Europe.