Even Obama’s wife will not speak directly about She Who Must Not Be Named:

You’ve got a number of the candidates [bold mine-DL] who went with conventional wisdom, and in the face of the evidence that was before them, they took the easy route, they voted for what felt like a popular war.

Now, it’s true that there are a “number of candidates” in the Democratic field who voted for the war.  There’s really only one of them today (Edwards having virtually covered himself in sackcloth and ashes over his vote) that poses a serious problem for Obama.  And he and his campaign literally will not say who that candidate is.  In case all this indirect, subtle hinting has made you forget, it’s Clinton.