a</a> on 25 May 1963. In October 1971, he was the first leader of an African nationalist movement to address the <a href="//en.wikipedia.org/wiki/United_Nations_Security_Council" title="United Nations Security Council">United Nations Security Council</a> in New York, leading to the <a href="//en.wikipedia.org/wiki/UN_General_Assembly" title="UN General Assembly" class="mw-redirect">UN General Assembly</a> passing a Resolution declaring SWAPO as "the sole and authentic representative of the Namibian People."