"Presidents usually only do what they say they are going to do. Ronald Reagan promised to rebuild American defenses and cut taxes. That is what he did. Obama promised to pull troops out of the Middle East, and that is what he did. If Clinton won't run on a free-trade platform, she won't govern on one," Mr. Kagan said.
"For a candidate to cower in the face of possible criticism from the irresponsible wing of her party gives little assurance that she has what it takes to lead the nation in the very difficult years ahead," he added.