There is no way one can refute the fact that we as Christians share a common enemy with Islam in the secular PC left. We are constantly complaining about the demise of our value system which made this nation at the hands of the liberals, and it is this same PC ideology that motivates the Jihadists to declare their fatwas against the west.
Remember, Jesus is a prophet in Islam - and history is replete with instances of Muslims defending Christian sites of religious significance. The monastery at the foot of Mt Sinai comes to mind - Mohammed himself declared that no Muslim would allow any harm to come to that place, even during the Crusades - and his personal guard kept watch over the monastery. Muslims put people of faith above those without, regardless of what that faith is. Yes, they still want to kill us all, but they'd kill the secularists first.
It isn't too large a stretch to imagine that if the west were to actually live up to its' religious values instead of what we are seeing today that OBL's movement would wither away and die. They see the west as being "Godless", can you blame them for that? We see them as barbarians due to their lack of placing any value upon human life and their seventh century way of living. There's a lot of educating that needs to be done on both sides about the other.
Once that happens, both sides will see who the true enemy is. The Left.
"Christians share a common enemy with Islam in the secular PC left."
Essentially correct, but at the moment both are tactically allied. In Holland there are first fissures in that alliance but I'm sceptic.
Should the Christian Conservative build alliances (at least tactical) with the religious Islam? I think that's very difficult since there is no unity in Islam, there are no contact persons (like the pope for the catholics) although I also believe that most of them share very respectable values with us. Never in the life can we join forces with the life-detesting extremists, the sympathizers of terrorism which are bred in the slums of European metropoles (I guess supported by government welfare).
The impossibility of alliances with Islamic powers does not mean that their forces remain unused against the Left. I'm just waiting for Turkey joining the European Union (a project of the Left): How would the Commies dictate their "values" to the Turks. A gay pride parade in East-Anatolia? Too funny! I predict nothing else as the end of the European Union as we know it, a free trade zone is enough.