Interview or savage attack?

Andrea Mitchell calls in an interview.  Rumsfeld understands that it’s a savage attack and, with great civility, responds accordingly.  Watch the video and enjoy DrewM’s comment:

I love the way he refuses to accept the premise of a number of her questions. It’s a skill I wish more political figures had. Far too often Republicans accept the framing of the question. They also tend to treat reporters as if they are trying to get information and not score liberal points. A few reporters but most aren’t. Rumsfeld doesn’t have any of it. He understands he’s in an adversarial situation and acts accordingly.

Why is Rumsfeld the only one who understands this?

By the way, Colin Powell has always been a whiner.