One of the anomalies of ISIS is its cowardice in the face of success.
Wherever it came from
and wherever it ends, there’s no doubt any longer than its claim to be the true Islam is bullocks.
One way of testing ISIS’s bravado is to look at its agenda. It doesn’t have one, except the acquisition of territory already islamicized and islamicized for a millennium. It is the agenda of a bully stealing candy from a child merely because it can and it wants it. It exists in the interstices of civil war (Syria) and a failed or failing state, Iraq. Its work had been done for it before it rolled into town with its ragtag militants blasting, beheading and raping their own people or executing in droves the members of sects traditionally protected by Islamic rulers: Chaldeans, Assyrian Christians, Yazidis and Mandaens, to name a few.
Their bravery consisted of preying on innocent and essentially passive Shi’a and moderate Sunni populations by insisting they weren’t pious enough, not orthodox, and therefore not fit to live. It is the kind of bravery we normally associate with street gangs who pick fights with gangs in the same neighborhood because the gangs across town are bigger and smarter.

The real index of ISIS cowardice however is opportunism. Once their ready supply of western heads had been exhausted, they turned to relics, antiquities, and cultural shrines:
Nimrud was a city in the Assyrian kingdom, which flourished between 900 and 612 BCE. Decimated.
Assyrian King Sargon II built a palace at Khorsabad between 717 and 706 B.C. Gone.
The museum and library in Mosul, Iraq’s second largest, destroyed and looted, the books torched.
The tomb inside a Sunni mosque called the Mosque of the Prophet Yunus, revered by both Muslims, Jews and Chriustians as the Old Testament figure, Jonah, destroyed.
Hatra. sstablished by the successors of Alexander the Great and dating back to 300 B.C., and the capital of an early Arab kingdom. The city withstood the attacks of successive armies, including those of the Roman empire. Pillaged and leveled.
And now Palmyra, an ancient city that exists in reports dating back to the seceond millennium BCE. Palmyra was fragile and deserted, a living and quiet monument to its biblical, Seleucid and Islamic past.
Its rape and destruction can only be compared to a robber stopping long enough in his crime to sexually assault the grandmother upstairs who is physically unable to prevent him from stealing her silverware.
It has to be true that many Muslims see the work of ISIS as imponderable and weird. A larger number find it embarrassing and contemptible. Many do not care, and a further number probably think that the ISIS warriors are finishing what the Prophet started.
Except the prophet did not start this. His raids against cities and towns were, for the early believers, holy warfare against the people he and his closest followers regarded as uncivilized and pagan: the people of the dar al-H’arab. True, Islamic iconoclasm and the conversion of churches and basilicas, like Hagia Sophia, to mosques were part of the triumphalism of Islam during the caliphates. But it is also true that Christians, Jews, and Zoroastrians (and other minorities) were granted dispensations for living peacably among the true believers.
It’s precisely this contempt for the concept of the moral duty of the true believers that ISIS warriors now exemplify. Pseudo-warriors of the pseudo-leader of a make-believe caliphate, pushing the false vision of an Islamic past that never existed onto the front pages. This is not holy war. It is not a defense of the right path or the true doctrine, or the sunnah of the Prophet.
The destruction of silent, ancient relics, the remnants of a past that predates Islam, is an attempt to suppress the claims of history against a religion that, in its extremist form, insists on living in a cruel, unholy and violent time-warp. To the extent that ISIS is the front line in this program resistance is not possible, or even sensible: Like Carthage of old, it must be destroyed.