strengthen their relationship
... that Iran and Cuba have been seeking to strengthen their relationship in recent years?
... that <a href="./Iran" id="mwDY0" rel="mw:WikiLink" title="Iran">Iran</a> and <a href="./Cuba" id="mwDY4" rel="mw:WikiLink" title="Cuba">Cuba</a> have been seeking to <b id="mwDY8"><a class="mw-redirect" href="./Iran-Cuba_relations" id="mwDZA" rel="mw:WikiLink" title="Iran-Cuba relations">strengthen their relationship</a></b> in recent years?