Wurmser left the Administration in August "to spend more time with his family," but has just launched his own firm, Delphi Global Analysis, a risk analysis outfit advising clients that include hedge funds and investment banks.
Speaking to The Daily Telegraph in his new office, only a few hundred yards away from the White House, Wurmser used his first interview after leaving government service to advocate the overthrow of the Iranian and Syrian regimes. Here's a selection of key quotes.
"We need to do everything possible to destabilise the Syrian regime and exploit every single moment they strategically overstep.... That would include the willingness to escalate as far as we need to go to topple the regime if necessary." He said that an end to Baathist rule in Damascus could trigger a domino effect that would then bring down the Teheran regime.
Limited strikes against Iranian nuclear targets would be useless, Mr Wurmser said. "Only if what we do is placed in the framework of a fundamental assault on the survival of the regime will it have a pick-up among ordinary Iranians.... If we start shooting, we must be prepared to fire the last shot. Don't shoot a bear if you're not going to kill it."
Although he conceded many mistakes had been made by the US in Iraq, Mr Wurmser said there were now reasons for optimism. "While Iraq became more violent, it also became in some ways the international bug-zapper of terrorists.... It was the light that attracted all the terrorists of the world. And that became the battleground, and this is a decisive battle. I think the battle is turning in our favour now, and this is a defeat that it will take the al-Qaeda world a long time to recover from."
In the meantime, the US still had the power to deal with Iran militarily. "If we decided from no preparation to doing something in Iran, while it would cause a lot of heartburn among many people in the Pentagon, we could do it.... I would never underestimate the raw capability of the United States in any off-the-shelf situation. If that's what we decided to do, things can be done."