I didn't know non-interventionalism had been so confused with isolationist.
Here let me show you.
North Korea-isolationist, state controlled trade, borders are closed, high tariffs in place
Switzerland-Non-interventionalist, open trade, open borders etc.
See the difference?
Anyways, with that out of the way, onto foreign policy.
So you're afraid of being viewed as "weak" then? Do you have any justification of being in our several overseas wars, of having 64k troops in Germany, of still having troops in Japan etc., of spending trillions of dollars on wars, of having thousands of our young soldiers dying overseas, do you have any justification for that at all other than "oh well we gotta look tough right?!?" So what, not our country looks like a 15 yr old male with an inferiority complex, at the cost of trillions of dollars and thousands of dead troops. But at least we "look tough" for the world right?