Lien-Hang Nguyen explores the origins of the planning in Hanoi for the 1968 Tet Offensive. Speaker Biography: Lien-Hang Nguyen is author of "Hanoi's War: An International History of the War for Peace in Vietnam." For transcript, captions, and more information, visit www.loc.gov/today/cyberlc/feature_wdesc.php?rec=6530