Ray
... that the Persian walled city of Ray was a military objective so frequently that, starting in the late 12th century, its inhabitants gradually moved out to an undefended village nearby called Tehran?
... that the <a class="mw-redirect" href="./Persia" id="mwDM4" rel="mw:WikiLink" title="Persia">Persian</a> <a href="./Defensive_wall" id="mwDM8" rel="mw:WikiLink" title="Defensive wall">walled city</a> of <b id="mwDNA"><a class="mw-redirect" href="./Ray,_Iran,_as_a_military_objective" id="mwDNE" rel="mw:WikiLink" title="Ray, Iran, as a military objective">Ray</a></b> was a <a href="./Military" id="mwDNI" rel="mw:WikiLink" title="Military">military</a> <a class="mw-disambig" href="./Objective" id="mwDNM" rel="mw:WikiLink" title="Objective">objective</a> so frequently that, starting in the late <a href="./12th_century" id="mwDNQ" rel="mw:WikiLink" title="12th century">12th century</a>, its inhabitants gradually moved out to an undefended village nearby called <a href="./Tehran" id="mwDNU" rel="mw:WikiLink" title="Tehran">Tehran</a>?