<iframe src="http://www.npr.org/player/embed/3822657/3822658" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
Forty years ago, President Lyndon Johnson asked Congress to grant him power to use force in Vietnam. The events that led to the Gulf of Tonkin resolution have long been the subject of debate and controversy. NPR's Bruce Auster reports.
NPR thanks our sponsors
Become an NPR sponsor