Isolationism is much more than giving up foreign territories, it is as much about that as it is about solely looking after your own interests rather than a more global view. Places where you would see this are treaties, entities like NATO, the United Nations and so on and by that yardstick the US is becoming more isolationist by the day.
Diego Garcia being vacated would be a sign that America is no longer a world power by any measure. It might come to that, but not in the next 30 years or so.
Diego Garcia being vacated would be a sign that America is no longer a world power by any measure. It might come to that, but not in the next 30 years or so.