We strong enough to defeat any attempt to do and isolating them will make our job of defending against any attack even easier.
"Evidently, one thing that they particularly despise is democracy, which, evidently, conflicts with the sharia and therefore cannot be allowed; however, democracy is what the United States is all about and is fundamental to Western Civilisation. There seems to be an irreconcilable conflict here."
IMHO, the freedom of society is defined by freedom of its enterprises, democracy without capitalism does not bring much to the table - there are plenty of examples throughout the history, with Zimbabwe and SA being the most recent ones. These guys first and foremost hate our freewheeling culture of greedy individualism.
"Something's gotta give. Don't you agree"
??? It seems like you are bent on destruction, I think that isolation is much more human way of addressing these issues.