Nov 17 1965 – Vietnam: Battle of the Ia Drang Valley - A battalion from the 1st Cavalry Division is ambushed by the 8th Battalion of the North Vietnamese 66th Regiment. The battle started several days earlier when the 1st Battalion, 7th Cavalry engaged a large North Vietnamese force at Landing Zone X-Ray at the base of the Cheu Pong hills (Central Highlands).
Nov 17 1967 – Vietnam War: Acting on optimistic reports that he had been given on November 13, U.S. President Lyndon B. Johnson tells the nation that, while much remained to be done, "We are inflicting greater losses than we're taking...We are making progress."
Nov 17 1969 – Cold War: SALT I Negotiations Begin - Soviet and U.S. negotiators meet in Helsinki to begin the Strategic Arms Limitation Talks (SALT). The meeting was the climax of years of discussions between the two nations concerning the means to curb the Cold War arms race.
Nov 17 1970 – Vietnam: As the fighting gets closer to Phnom Penh, the United States steps up its air activities in support of the Cambodian government. U.S. helicopter gunships struck at North Vietnamese emplacements at Tuol Leap, 10 miles north of Phnom Penh.
Nov 17 1970 – Vietnam: The court-martial of 1st Lt. William Calley begins. Calley, a platoon leader in Charlie Company, 1st Battalion, 20th Infantry, 11th Infantry Brigade (Light) of the 23rd (Americal) Division, had led his men in a massacre of Vietnamese civilians, including women and children, at My Lai 4 on March 16, 1968. My Lai 4 was one of a cluster of hamlets that made up Son My village in the northern area of South Vietnam..