Sanger's complete answer on the April 26 This Week:

I think we've learned that he's more moderate than we had expected. I think we've learned that he is quite determined to follow through, almost as a checklist, on his campaign promises. And I think we've also learned that we don't really know his bottom line. Whether it's the banks or Iran, we haven't yet figured out whether or not there's an element in this personality that wavers a bit.