Islam's problem is that the Qu'ran actually specifically charges people to take up arms and expand, or defend, their surzeainty. The collected sayings of the Prophet include one that states "He who dies without participating in a campaign dies in a kind of unbelief."
Islam's days of waging offensive war are over; they ended with the defeat of the second siege of Vienna. Arguably they ended even well before that with the beginning of the Reconquista in Spain, or the Normans retaking Sciliy. But the religion suffers from a crisis of faith now. When they were young, their rightness of purpose was assured by their victories, their power, wealth, accomplisments, influence. Truly they were God's chosen, for His favor was clearly upon them.
Then Europe resurged. The Spanish retook their country. The Normans retook Sciliy. The first siege of Vienna was broken. The second siege of Vienna ended in a rout. Cracks appeared in the monolith that Mohammed's faith was meant to be. But is was still strong, still capable, or so it appeared. The Ottoman Empire, heirs to the Caliphate if anyone was, was still regarded as a major power.
Then came WWI, and everything changed. The Faithful fractured, their empire divided, the Christians, for Islam has difficulty understanding that the term "Christendom" has lost its meaning, triumphant. And they remain divided, weak, bereft of leadership and the power they fought so long and so fiercely to gain slipping from their grasp with ever-increasing speed.
Islam remembers a time when it was strong, when it ruled vast tracts of Russia, when its armies were the terror of Europe, when it was the premier power of the world. God was with them then.
Now, He seems to have deserted them. And they percieve that as clearly as they once did their own strength.
