It's incredibly telling and depressing that you conflate ending endless warfare with isolationism.And he is still not a Republican.
Endless wars = isolationist policy, which does not work when you are the world's super power. You can blame Bush for the US being involved in the Middle East, we cannot just leave those countries after we have destroyed them, it's our responsibility to rebuild them.
And I'm not advocating for civilan deaths, but they will happen. Drones are likely to prevent more deaths then on the ground troops.
Oh and and it's super cool that drones prevent troop deaths but I'm a little more concerned with the innocent people getting murdered for no reason.