<a href="https://en.wikipedia.org/wiki/England" id="mwIQ" rel="mw:WikiLink" title="England">England</a> and <a href="https://en.wikipedia.org/wiki/Portugal" id="mwIg" rel="mw:WikiLink" title="Portugal">Portugal</a> formally ratify <a href="https://en.wikipedia.org/wiki/Anglo-Portuguese_Alliance" id="mwIw" rel="mw:WikiLink" title="Anglo-Portuguese Alliance">their alliance</a> with the signing of the <a href="https://en.wikipedia.org/wiki/Treaty_of_Windsor_(1386)" id="mwJA" rel="mw:WikiLink" title="Treaty of Windsor (1386)">Treaty of Windsor</a>, making it the oldest diplomatic alliance in the world which is still in force.