Goldwater's provocative advocacy of active interventionism to prevent the spread of communism and defend American values and allies led to effective counterattacks from Lyndon B. Johnson and his supporters, who claimed that Goldwater's militancy would have dire consequences, possibly even nuclear war. In a May 1964 speech, Goldwater suggested that nuclear weapons should be treated more like conventional weapons and used in Vietnam, specifically that they should have been used at Dien Bien Phu in 1954 to defoliate trees. Regarding Vietnam, Goldwater charged that Johnson's policy was devoid of "goal, course, or purpose," leaving "only sudden death in the jungles and the slow strangulation of freedom". Goldwater's rhetoric on nuclear war was viewed by many as quite uncompromising, a view buttressed by off-hand comments such as, "Let's lob one into the men's room at the Kremlin." He also advocated that field commanders in Vietnam and Europe should be given the authority to use tactical nuclear weapons (which he called "small conventional nuclear weapons") without presidential confirmation.