He's against it. From Martin Kramer's Sandstorm:
"The wrong Muslims. Now if some of the Islamists today were on a march to power, the case for dialogue might be more compelling. But where are these Islamists? Where is the Khomeini of Saudi Arabia or Iraq? Skeptical as we may be about the prospects for the Saudi monarchy or the Iraqi government, it is difficult to see Islamists who could replace them. And what would we talk about in a dialogue with the kinds of Islamists who seek to seize power in Saudi Arabia or Iraq? Would not such a dialogue merely antagonize and alienate those forces for stability that still have a chance to see the crisis through? And do we really think that were we to facilitate the ascent of any of these groups, they would be grateful for it? Any more so than the Afghan mujahideen?
"In sum, dialogue with Islamists, far from undercutting the jihadists, would undercut their opponents. It would muddle the message of the war on terror--the message that there can be no middle ground, and that Muslims must choose. Islamists not only wish to create a middle ground in the Middle East, but they seek to extend it to American soil. Few things could undermine the war on terror more thoroughly than dialogue with them, because it would facilitate just that.
"The United States has no use for equivocating Islamists. The United States does have use for dialogue with believing Muslims--those who share its vision of a Middle East that is free, and free of terror."