Say that, in the weeks leading up to Tet, an NVA officer is captured, interrogated, and reveals the plans to launch a massive offensive on the Tet New Year. The U.S. and the South Vietnamese promptly organise to be ready for the assault.
How does this affect the Tet Offensive, and the Vietnam War as a whole? What sort of reprecussions are there in terms of the Home Front in the U.S.?