Here's more from Donald Kagan, former Dean of Yale and father of Fred and Robert and father-in-law to Kimberly, in an article in the Yale Daily News:

[Kagan's] keynote address centered on the importance of patriotism and national unity, and Kagan decried those who support withdrawing troops from Iraq in the near future. Referencing a lecture he gave shortly after the attacks of Sept. 11, he said Americans have a “moral responsibility” to support the government.

“The war [in Iraq] is not lost,” Kagan said. “[Yet] opponents have rushed to declare America defeated"...

Sept. 11 has been designated “Patriot Day,” and Kagan opened his speech by saying he intended to focus on the concept of patriotism. Citing America’s role in World War II, the fall of the Soviet Union, the conflict in the Balkans and the removal of Saddam Hussein, Kagan painted an image of the United States as a force for freedom in the world.

“America has been a beacon of liberty to the world since its creation,” Kagan said.

As an advocate for freedom, the U.S. has earned its share of enemies, so Kagan said it has a special need for domestic unity and patriotism.

“Few countries have been subjected to as much questioning … as our own,” Kagan said, “There should be a presupposition in favor of patriotism.”

Americans who have questioned the United States’ involvement in wars in Iraq and Afghanistan are unpatriotic, Kagan said, and are undermining the country’s efforts to win the wars...