Good questions.
The answer is we should give up on all of that adventurism. The money to wage these "wars" isn't there anymore.
Our next "war" has to be against the imperial congress, supreme court and executive branches of the federal government.
They have to be dragged back to what they are allowed to do by the Constitution.
Or else we just need to tear down the current structure and replace it with one that fits the Constitution... and put some SERIOUS penalties in place for those who would try to circumvent it again. Maybe bring back the rack and the Iron Maiden for those who would try to impose an income or a property tax again. And give long, cleansing baths in boiling oil for the next would-be drug warriors and internationalists. The problem we have right now is that there are NO PENALTIES attached to what government is doing to us... and that needs to be resolved by adding them. And APPLYING them to the miscreants.