It is the foundational treaty of the United Nations. It was signed at the San Francisco War Memorial and Performing Arts Center in San Francisco, United States, on 26 June 1945, by 50 of the 51 original member countries. As a charter, it is a constituent treaty, and all members are bound by its articles. Furthermore, Article 103 of the Charter states that obligations to the United Nations prevail over all other treaty obligations.Most countries in the world have now ratified the Charter.