ZONA PERANG (zonaperang.com) – On January 21, 1968, communist forces lay siege to the US Marine base at Khe Sanh, South Vietnam. The standoff lasts for 170 days.
Please read : November 27, 1964 : Recommending increased U.S. bombing and troop on North Vietnam (THIS DAY IN HISTORY)
Please read : November 17, 1967 : President Johnson on the Vietnam War (THIS DAY IN HISTORY)