1964 – Former Vice-President Richard Nixon begins a three day visit to Vietnam during which he sharply criticizes US policies for “compromises and improvisations,” calling for continued aid and promising to make this an issue in the upcoming US Presidential race.
1965 – 17 non-aligned nations appeal to the UN, the US, Britain, the Soviets, North and South Vietnam and other bodies in a call for a “peaceful solution through negotiations.” President Johnson formally responds on 8 April that the US agrees with the goals, but cannot negotiate until North Vietnam ceases its aggression.
1965 – President Johnson agrees to send more US ground forces to Vietnam and to allow them to take offensive action. Public statements do not mention this change in policy.
1966 – The Vietcong set off a 200 pound bomb at a Saigon hotel housing US troops. The building is heavily damaged. Three US and 4 South Vietnamese troops are killed.
1968 – Operation Pegasus/Lam Son 207 begins. A two week joint combined operation between US 1st Air Cavalry, Marines and four ARVN airborne battalions. The goal is to relieve the Marines besieged at Khesan.
1969 – Defense Secretary Melvin Laird announces that B-52 bomber raids in Vietnam will be decreased by 10% as a result in cuts in next year’s defense budget.
1969 – The Vietcong’s Liberation News Agency claims that their offensive has shattered General Creighton Abrams’ strategies following the 1968 Tet Offensive.
1970 – Captain Ernest Medina is formally charged with the murder of Vietnamese civilians by members of his company at Songmy. Medina, speaking to the media reveals that he is accused of the premeditated murder of 175 people and denies participation in any mass killing.
1971 – Vice-President Spiro Agnew refers to war critics as “home-front snipers” accusing anti-war activists of garnering disproportionate coverage, overbalancing, what he sees as the majority view, that US forces in Vietnam have acted patriotically.
1975 – More than half of South Vietnam’s territory is now controlled by the North. Communist forces begin the envelopment of Saigon, coming in from the south, threatening Highway 4, Saigon’s connection to the Mekong Delta.