Twenty years ago this week, the US suffered an unprecedented attack. Unlike Pearl Harbor, we were hit on the mainland; in New York City and Washington, D.C., no less, not to mention Shanksville, Pennsylvania. And we were attacked not by a nation, as on December 7, 1941, but by a loose net of terrorists representing an ideology—not a country.

In today’s Turning Point, I talk about lessons lost and lessons learned. I hope you’ll take five minutes to listen…and remember.