The Vietnam War was the most intensely televised war ever. However, next door in neighboring Laos the longest and largest air war in human history was underway and made Laos the most bombed country on the planet without notice of the outside world. It was the largest operation ever conducted by the CIA, yet to this day it remains utterly obscure. Critics call it the biggest war crime of the Vietnam War era and point to striking similarities of the present conflicts in Iraq and Afghanistan that were tested and set in motion back in Laos in the 1960s. In The most secret place on earth key players of the secret war – former CIA agents, US pilots, Laotian fighters and war reporters – take us on a journey into the physical heart of the conflict: Top secret Long Cheng, where the CIA built their headquarters in 1962. From here the secret war was largely planned and executed. As the war dragged on, Long Cheng became the busiest airbase in the world and a major center for the global opium and heroin trade.