Why we can't admit that the world is not only on the war of terrorist/extremist, but on the dogma of Islam?
So long as the Muslims can't convince themselves to be a moderate or at least not to translate their scripture literally, then, there will always be an extremist- ready to kill people outside of their religion.
The Christians do not practice the Old Testament. We are lucky that we do have a New Testament, otherwise there would be X-tians flying airplanes and crush to buildings.
It is true that not all Muslims are terrorists, however the majority of Terrorists are Muslim. Lets face the reality that most dangerous major religion in this planet is Islam. Some quotes from their quaran:
"God's curse be upon the infidels!" (2:89).
"They have incurred God's most inexorable wrath. An ignominious punishment awaits [them]" (2:90).
"God is the enemy of the unbelievers" (2:98).
"The unbelievers are like beasts which, call out to them as one may, can hear nothing but a shout and a cry. Deaf, dumb, and blind, they understand nothing" (2:172).