Colin Powell was a Vietnam War veteran, a four-star general, and—among other high-level positions in the U.S. government—the Secretary of State under George W. Bush. Powell was well known for his conviction that the United States should go to war only when the likelihood of victory was overwhelming. But then the Bush Administration used his popularity to persuade the public to support the Iraq War, which became one of the greatest military calamities in U.S. history. Dexter Filkins joins Dorothy Wickenden to discuss Powell’s long record of public service, and how he shaped post-Cold War foreign policy.