Bell moved to London to begin her academic career at
the LSE in London, where she completed an MSc supervised by
Martin Wight. During this period she was also employed as a research officer at the
Royal Institute of International Affairs (Chatham House) where the historian
Arnold J. Toynbee gave her responsibility for writing the 1954 edition of its
Survey of International Affairs. In 1956 she was appointed the first international relations lecturer at Manchester University and began writing her PhD. With the support of the departmental professor,
W. J. M. Mackenzie, Bell spent 1958 on a
Rockefeller Fellowship which took her to the US at the
School of Advanced International Studies at
Johns Hopkins University in Washington, DC, and
Columbia University in New York. This allowed her to meet a number of key figures who were formulating US foreign policy, including
Paul Nitze and
Robert Oppenheimer, with whom she discussed the still-secret
National Security Council policy paper,
NSC 68, written by Nitze. In 1961, Bell was appointed the first Senior Lecturer in International Relations at the University of Sydney. However, she returned to England to a Readership at the LSE in 1965. In 1972 she became a professor of International Relations at the
University of Sussex and was a member of the
International Institute for Strategic Studies. From 1977 to her formal retirement in 1988 she was a Senior Research Fellow in the department of International Relations at the
Australian National University. Subsequently, until her death in 2012, she was a visiting fellow at the ANU
Strategic and Defence Studies Centre. ==Impact==