As an Orthodox Christian who has read the Qur'an, albeit in an English translation, I can say that despite there being a lot said in it about killing the enemies of the Islam, there is also a lot about tolerating the Christians who are not disturbing Islamic life. Notably this verse:
Verily! Those who believe and those who are Jews and Christians, and Sabians, whoever believes in God and the Last Day and do righteous good deeds shall have their reward with their Lord, on them shall be no fear, nor shall they grieveNow it may well be, and I sympathise with the view, that foreign powers from the West have destabilised and persecuted many in the middle east, mainly so that the oil can be plundered cheaply. And these powers might be perceived as Christian, but like the Catholic Terrorists of the Crusades (which is the best way I can think of describing them succinctly), these powers are most decidedly not Christian. The God worshipped in Washington and London is a yellow idol with the atomic number 79, any taint of Christianity left there long ago. I have similar suspicions of the motives of those in power most countries, Eastern or Western.
We should not be so naive as to think that the management of Al Qa'ida doesn't know this. The suicide bomber is just as much a victim as those he takes with him. These men are just as evil as the elected dictators of the West, their actions are not for the betterment of the lot of their followers, their God is not Gold, but it is Power.
Think of it, if you worship power over people, what greater thrill could you have than to say to someone: "go and kill yourself for me".
Christ our God, you tolerated the Hebrews when they worshipped idols and offered their children to foreign gods. Time after time, you forgave them and helped them return to you. You raised up great prophets to remind your people of their covenant. Help us to suffer these same things in our modern world gladly for your sake. Receive the martyrs of this age as you receive those from every age.
Holy New Martyrs pray for us to Christ God that our souls, and those of the misguided ones who killed you, may be saved.