Watch financial experts discuss the geopolitical implications of international sovereign wealth funds buying stakes in companies in the United States and elsewhere.

The McKinsey Executive Roundtable Series in International Economics is presented by the Maurice R. Greenberg Center for Geoeconomic Studies and the Corporate Program.

Watch U.S. Department of Homeland Security Secretary Michael Chertoff reflect on government actions during crises and lessons learned from his time in the Bush administration.

DAVID WESTIN: Good afternoon. I'm David Westin, and I'm privileged to be able to be here with the secretary today. I have a few remarks and I have a script here. I'll make sure I get them all right…