Then what- would you convert them all to Communism? They must be converted to something because evn on a totally beaten population Islam cannot be merely ignored and IT CANNOT BE CHANGED and Christianity is what we have the most experience with, though I am sure we can find enough teachers right here in the US to effect a conversion to Communism.
However, to claim they need to be forced to convert to Christianity at the end of a sword opposes Christian principles at their core.
I believe democracy has Judeo Christian ethics at its root. If we continue to encourage democracy in Islamic nations, it is the best avenue we have to eventually bring them into the civilized, Judeo Christian world.
(And we need to kill the Islamofascist terrorists en masse as we do that).