How Hanoi went from being bombed by Washington to hosting Trump-Kim summit
by from CNN.com - RSS Channel - App International Edition on (#49Z91)
On December 18, 1972, two sorties of hulking US B-52 bombers roared off from the U-Tapao airfield in Thailand and Andersen Air Force Base in Guam to begin what one Air Force officer called "the largest operation in the history of air power."