He wrote extensively in defense of neoliberal economics, particularly in developing nations. Rostow's successor as National Security Adviser, the Harvard professor, Henry Kissinger, was obsessed with the fear of becoming "this administration's Walt Rostow" whose support for the Vietnam War ruined his reputation with the liberal sections of the American intelligentsia and led him teaching at the University of Texas, which was regarded as a second-rate university, a fate that Kissinger was keen to avoid. Kissinger wanted to resume his professorship at Harvard as he did not want to end up teaching at an "unacceptable" institution like the University of Texas as Rostow did.