Yesterday we had Colin Powell endorsing Barack Obama. And today, via George Packer, we learn that uber-hawk Ken Adelman is going to vote for Obama.

Now, the thing here is that Adelman's choice, while not nearly as politically consequential, is a much, much bigger surprise than Powell's. Powell's informal support for Obama has been an open secret for some time. And he was always an outlier in George W. Bush's world of petulant unilateralism.

Not Adelman. Without putting too fine a point on it, the kind of 'shoot first and ask questions later', 'we're going to democratize your ass' foreign policy that McCain comes to by way of personality disorder is one Adelman has been espousing as a matter of considered principle for more than thirty years.

So what's his beef exactly?

You can read his email to Packer for the full details. But the gist seems to be that watching McCain over the last two months, Adelman decided he just lacks the temperament and judgment to be president.