Supplemental Agreements and Understandings
The INF Treaty documents do not contain the only binding provisions affecting INF systems. The Treaty was fleshed out by a series of supplemental agreements and understandings which clarified Treaty obligations and facilitated their implementation. A Basing Country Agreement with the five NATO basing countries was negotiated to ensure smooth implementation of the Treaty on Western European soil. Many important technical issues affecting implementation which were unclear or left unresolved in the Treaty had to be worked out in U.S.- Soviet technical talks which started in spring 1988 and were concluded, after EIF, in the Treaty's Special Verification Commission. Moreover, a number of conditions, declarations, and understandings were added to the Treaty during the ratification process.
Consultations between the NATO Allies and the United States were close and effective throughout the INF negotiations. The Special Consultative Group set up in NATO to facilitate the exchange of information and coordinate viewpoints worked successfully to resolve intra-Alliance differences and preserve Allied unity during the negotiating process. However, once it became clear that an INF Treaty would be signed, a more formal method had to be found to ensure that the Treaty could be effectively implemented in Europe. The on-site inspection provisions of the INF Treaty, in particular, permitted U.S. and Soviet inspections at INF