"He's got to know that would prevent a deal from being made."

More difficult would be deciding how to divide the spoils, a step complicated enough to prevent a deal, officials say.

China though, have already prevented a great deal of pollution through their one-child policy, contentious as it is.

Would that be enough to prevent a deal?

Not that years of feuding would necessarily prevent a deal.

Addressing critics, he said differences between the United States and China should not prevent a deal.

Cancún climate change summit: Is God determined to prevent a deal?

So I would prefer to prevent a great deal of trouble and kill you before you mindmeld.

While the freshman fervor has brought Gingrich tantalizingly close, it may also prevent a final deal.

To a place where few men have ever gone, to prevent a great deal of harm to a great many people.