The other casualties of Syria, historical monuments.

I saw this on the BBC this morning, very sad. Accidental war damage is to be expected but what is more troubling is that ISIS are actively demolishing historical monuments, shrines and other works. It would seem that they are trying for a 'cultural cleansing' of the shia.
Has always happened. Library of Alexandria, Temple in Jerusalem, Carthage - the list is endless.
'Iconoclasm' for religious reasons, plus a bit of Khmer Rouge 'Year Zero' mentality.
I expect the illegal excavation and antiquity trade is running at full pelt as well.