"The only way the French are going in is if we tell them we found truffles in Iraq"

This quote by Dennis Miller is a humorous way of saying that the French are unlikely to join the United States in a war in Iraq. Miller indicates that the only method the French would want to sign up with the United States in a war in Iraq is if they were assured something of terrific value, such as truffles. This is a reference to the French's love of great food, and Miller is recommending that the only way to get the French to join the United States in a war in Iraq is to use them something they would discover irresistible. The quote is a funny way of highlighting the differences between the United States and France when it concerns diplomacy.