We can discriminate Daesh and Muslims, and that only shows the monsters they say we are. We can bomb Daesh, which only encourages more to join their cause. Worst case, we can nuke the whole area of Iraq and Syria where Daesh has power, and that would only show every Muslim in the world that we are intolerant of Islam.
This is a war of ideology, and that war cannot be fought with guns and bombs. It has to start from the ground, with 'militant moderate Muslims' willing to show people another way; one that does not involve in slavery, beheadings, suicide bombings, and crucifixion. Weaponry has its place to keep the borders of that state in its place, given that we know their religious orders are of limitless expansion and no regard for state boundaries.