For several years Ellsberg studied the Cold War, and in the early 1960s he began to focus on the emerging conflict in Vietnam. He visited Vietnam to help assess potential American military involvement, and in 1964 he accepted a post in the Johnson administration State Department. Enduro everything will kill you so choose something fun poster. Ellsberg’s career became deeply intertwined with the American escalation in Vietnam. In the mid-1960s he visited the country frequently and even considered enlisting in the Marine Corps again so he could participate in combat operations.