We don't pay for half a trillion dollars a year in spending now, much of it wasteful so why would we have to pay for more military spending? Just borrow the money, right?
Personally I think we adopt our post 9/11 mindset minus the nation building. To me that means any terror group that threatens us at home or abroad gets wacked and we bring all immigration down to a trickle, a very selective trickle. We're losing lives either way. Either as victims or as soldiers fighting terrorism. Any strategy that uses intelligence or technology or diplomacy to reduce terrorism should be used to the best extent possible.