In the previous post I noted that the 9/11 Commission is threatening to subpoena the White House over its refusal to turn over intelligence documents from the lead-up to 9/11 (specifically, they seem to be demanding copies of the Presidential Daily Brief from just before the attacks.)

Perhaps this goes without saying, but look at these various controversies: possible subpoenas over White House stonewalling of the 9/11 investigation, the multiple investigations of the pre-war intel on Iraq, the criminal investigation into the Plame disclosure.

There are differences in each, of course. But in each case, fundamentally, we're talking about the same players: the White House and Intelligence Community. Each is coming to a head. It's a combustible mix.