I don't care if Islam changes or not, as long as we limit its impact on us. Even if you are correct that Islam is "perpetual war," it is complete BS to think that we will be at war until we eradicate a religion and its billion adherents. As soon as you acknowledge that the goal is something short of that, then we need to define the goal. What do you think it is?
Once we stop placating to the notion that inclusion is the way to peace and that militant Islamic clerics armed to the teeth, outside their state or government mandate, are going to give up the vast wealth and power they wield, the sooner we can alter the lifestyle of the people of influence in those nations in order to "force" them to police their own and demand an end to such militant craziness by those inside those countries. As it stands now, most the wealth and people of power in those nations tend to their assets and lifestyles outside of their origin. They have no incentive to police their own. As a matter of fact they have a disincentive to right their ship as it provides cover for them and they bank on the self defeating good will of western and european nations to allow them to live dual lives.