Are we willing to be as ruthless as Saddam? If not, then what?

The situation is Iraq, according to Greg Richards in American Thinker, is a ...

"Catch-22. This is the Gordian Knot that has been at the center of the Iraq problem from the beginning - the Shia are tasting power for, as the ISGR says, the first time in 1300 years and they are not going to give it up now. And the Sunnis are not going to retire gracefully from their historic position as the ruling class. Controlling this was the political purpose of Saddam's terror, however debased it became in practice. Are we willing to be as ruthless as he was is the real question facing us. And that we will likely have to pick a side. Saddam had picked the Sunni side."