Helsinki Treaty

The Helsinki Treaty, or Agreement on Cooperation between Denmark, Finland, Iceland, Norway and Sweden, sets the framework for Nordic cooperation in the Nordic Council and the Nordic Council of Ministers. The Treaty was signed on 23 March 1962 and entered into force on 1 July 1962. It was amended in 1971, 1974, 1983, 1985, 1991, and 1995. The most recent amendments entered into force on 2 January 1996.
The preamble to the agreement states, among other things, that the Nordic countries: