We should have stuck with "You are either with us or against us," after 9/11.
History shows Islam cannot be negotiated with.
First of all, they have no center of leadership. They never had one for Islam as a whole. No seat of religion or government that could be dealt with. The Ottoman Empire was the closest they ever came to any semblance of a center of government, and consider how they have carried on their battle against all other societies on the planet, that do not submit to them, since this time. Even when, at their pinnacle, when they spanned the entire continents of Europe and Asia, there was no central seat. Today there is Al Qaeda (The Base); But find it on a map.
Second, coming to some kind of peaceful agreement with any faction of Islam, means that faction has turned against allah, and Quranic tenets, and is treated as an internal enemy and traitor against all other factions.
You can whack one faction into submission, but the other factions go about their daily lives in their mosques, deliberately intent on finding weaknesses in the conquerers, and live to engage the conquerers in battle, until the end of days.
Today there is no Muhammad to bring to a bargaining table, who can speak for his 'nation', and accept any peace agreement of any kind.
The closest thing they have is a caliph, and no one can agree on who the caliph should be.
Even if there were a caliph and caliphate, it would not represent all factions of Islam.
The pendulum is swinging in the favor of Islam, at this time. But as time creates more power and freedom for the muslims, societies come to understand that they have to be dealt with in severity in order to bring their savage paganism to an acceptable level.
The mosque is where they can be brought to the realization that Western societies will not tolerate their barbarism.
Their mosque is like their pentagon. It has to be considered fair game, and severely limited to impress upon them that we will not accept their obstinacy.
It is the only method to successfully deal with the 'us or them' attitude that is spread through their DNA.