The Charter of the United Nations, UN
The Charter of the United Nations is considered the foundational treaty of the United Nations. The Charter consists of a preamble and a series of 111 articles grouped into 19 chapters. As a charter, it is a constituent treaty, and all members are bound by its articles. The Charter states that obligations to the United Nations prevail over all other treaty obligations.
For more information, please visit the UN at http://www.un.org/en/documents/charter/index.shtml