Opposing STUPID WARS is far from being isolationist. About the only direct combat during the 8 years of Reagan was Granada, and that was over in about a day.
If NOT being isolationist means trying to ‘nation build’ as the GOPe seems to think can work, and/or bombing the civilians of non-threatening countries (as in Belgrade, Syria, and Libya), count me as an ISOLATIONIST, since that does seem to be today’s definition.
I hate to rain on your parade, but you are very poorly informed.
We have now, and have had, combat troops in dozens of countries all over the world for years.
Strictly Low-Intensity and they like to say these days, but war is war.