As polarized as we have been, we Americans are locked in a cultural war for the soul of our country.

Historically, the Balkans have been an incubator of war.

For Americans of the Greatest Generation that fought World War II and of the Silent Generation that came of age in the 1950s, the great moral and ideological cause was the Cold War. It gave purpose and clarity to our politics and foreign policy, and our lives.

Our own CIA has a storied history of interfering in elections. In the late '40s, we shoveled cash into France and Italy after World War II to defeat the Communists who had been part of the wartime resistance to the Nazis and Fascists.

If there is a horrific attack on this country like 9/11, the American people will demand we go to war and settle accounts with those who did it. But America's appetite for intervention, for nation building, for democracy crusades, is fully sated.

In the long run, one of the great threats to this country is its tendency to dissolve along the lines of race, ethnicity and language,