Masyaf
... that the Ayyubid sultan Saladin attempted, but failed, to capture the fortress of Masyaf , which served as the headquarters of the Assassins in Syria?
... that the <a href="./Ayyubid_dynasty" id="mwBuo" rel="mw:WikiLink" title="Ayyubid dynasty">Ayyubid</a> sultan <a href="./Saladin" id="mwBus" rel="mw:WikiLink" title="Saladin">Saladin</a> attempted, but failed, to capture the <a href="./Masyaf_Castle" id="mwBuw" rel="mw:WikiLink" title="Masyaf Castle">fortress</a> of <b id="mwBu0"><a href="./Masyaf" id="mwBu4" rel="mw:WikiLink" title="Masyaf">Masyaf</a></b> <i id="mwBu8">(pictured)</i>, which served as the headquarters of the <a class="mw-redirect mw-disambig" href="./Assassins" id="mwBvA" rel="mw:WikiLink" title="Assassins">Assassins</a> in Syria?