That makes no sense. You contradicted yourself with that post.
Openly intervening in the affairs of a foreign nation whilst having open borders is the mark of insanity.
If you're going to interfere with the affairs of other countries, you'd better have a border that's sealed up tight, because you're only going to invite conflict from people who might otherwise have a bone to pick with you for meddling in their domestic affairs.
But if open borders are more important, then don't start anything that'll cause foreigners to want revenge in your homeland, because they'll simply walk right in.