Circumstances of assignment to Vietnam; attitude toward Diem; Edward Lansdale; meeting with LBJ; Taylor-Rostow mission; the Thompson mission; Trueheart Commission; strategic hamlet program; meetings with Diem; Mike Mansfield visit; Buddhists; period in 1963 when Nolting was on leave; attitude of presidents of Vietnam; Ambassador Lodge; telegram of August 24; Krulak-Mendenhall mission; John Richardson; the coup; Trueheart leaves Vietnam; David Nes