Joseph Biden actually said...

We have simply too much at stake in the world today to walk away from it, even if we could.

International leadership does not involve a choice between sending in the 101st Airborne or doing nothing.

There needs to be a broad look at the functions and capabilities of NATO, taking into account what Russia has been up to.

The approach I suggest does not fall easily into traditional categories of foreign policy; that is, either realism or idealism.