Maurice R. Greenberg, the former chairman and CEO of the embattled insurance giant AIG, discusses what will be needed to stabilize the firm’s operations.

Robert Hormats, the vice chairman of Goldman Sachs International, discusses hidden economic costs of the Iraq war and urges frank discussion of the U.S. military budget.

Peter J. Robertson, the vice chairman of Chevron Corporation, discusses the likelihood of global oil production meeting demand in the decades to come.

Karim Sadjadpour, an Iran political analyst, says the sanctions imposed by Washington on Iran this week are unlikely to have much of a financial impact on Tehran.  

Sebastian Mallaby, director of CFR’s Center for Geoeconomic Studies, says the skewed governing securities ratings agencies is partly to blame for stock market turmoil.