Each side considered itself «responsible,» but the more countries with nuclear capabilities, the less the superpowers could control events. There was also the fear of nuclear accidents. During the period of détente, a number of political agreements were reached. The final act of Helsinki was an agreement signed by 35 nations that closed the conference on security and cooperation in Europe in Helsinki (Finland). The multifaceted law addressed a number of important global issues and had a significant impact on the Cold War and US-Soviet relations. The final act of Helsinki dealt with a large number of issues, which are divided into four «baskets». The first basket included ten principles that included political and military issues, territorial integrity, border definition, peaceful dispute resolution, and the implementation of confidence-building measures among opposing military personnel. The second basket focused on economic issues such as trade and scientific cooperation. The third basket highlighted human rights, including the freedom of emigration and reunification of families divided by international borders, cultural exchanges and freedom of the press. Finally, the fourth basket formalized the terms of follow-up meetings and implementation procedures.
The CSCE held further meetings in Belgrade in 1977-78, Madrid in 1980/83 and Vienna in 1986/89. In the months leading up to the conclusion of the negotiations and the signing of the final Helsinki Act, American citizens, especially The Eastern Americans, expressed concern that the agreement would mean the adoption of Soviet supremacy over Eastern Europe and the integration of the Baltic States into the USSR. President Ford also expressed concern about the issue and sought clarification from the U.S. National Security Council.  The U.S. Senate also expressed concern about the fate of the Baltic States and the CSCE in general. Several senators have written to President Ford requesting that the final phase of the summit be delayed until all issues are resolved in a west-friendly manner.  The document was seen both as an important step in reducing tensions during the Cold War and as an important diplomatic boost for the former Soviet Union, as it had clauses on the inviolability of national borders and respect for territorial integrity that consolidated the territorial conquests of the USSR in Eastern Europe after World War II.
In view of the objections of Canada, Spain, Ireland and other countries, the final act simply stated that «borders» should be stable in Europe, but could change by peaceful domestic means.  US President Gerald Ford also said that the policy of non-recognition of the Baltic States (Lithuania, Latvia and Estonia) in the Soviet Union had not changed.  Leaders of other NATO members have made similar statements. :65 Although unpopular in the West at first, the final act of Helsinki proved important at the end of the Cold War.