Hugh Eakin has asked why the military has not used air strikes to dissuade the destruction of cultual sites like Hatra and Nimrud.
Good question. Instead of making legitimate collecting of ancient artifacts that "look Syrian" subject to "collateral damage" from import controls supposedly designed to thwart ISIS, Western Governments should be directing at least some of the fire power at their disposal at ISIS culture destroyers themselves.
And why not consider spreading anti-personnel and anti-tank mines around archaeological sites by air? Modern mines can be programmed to go inactive after a period of time so they would not be dangerous forever, but they could for a time dissuade ISIS jihadis from doing their worst.
It's too late for Hatra and Nimrud, but other sites in Syria and Libya are threatened by fanatics and should be protected before it's too late.