MoDo sums up the problem of the Kissinger appointment:

It's an inspired choice. Bold, counterintuitive, edgy, outside the box.

Who better to investigate an unwarranted attack on America than the man who used to instigate America's unwarranted attacks?

Who better to ferret out government duplicity and manipulation than the man who engineered secret wars, secret bombings, secret wiretaps and secret coups, and still ended up as a Pillar of the Establishment and Nobel Peace Prize winner?

(snip)

If you want to get to the bottom of something, you don't appoint Henry Kissinger. If you want to keep others from getting to the bottom of something, you appoint Henry Kissinger.