The most immediate and obvious obstacle to realization of these goals is the fact that two historic Islamic structures which are 13 centuries old, namely the Al Aqsa Mosque and the Dome of the Rock, are built on top of the Temple Mount. Any efforts to damage or reduce access to these sites, or to build Jewish structures within, between, beneath, beside, cantilevered on top of, or instead of them, could lead to severe international conflicts, given the association of the Muslim world with these holy places.