The Arnold A. Saltzman Institute of War and Peace Studies (SIWPS) is a research center that is part of Columbia University's School of International and Public Affairs in New York.

It was founded in 1951 by President of Columbia Dwight D. Eisenhower as the Institute of War and Peace Studies (IWPS) and was led for its first 25 years by Professor William T. R. Fox.

By its own description, the institute's researchers analyze "the political, military, historical, legal, economic, moral, psychological, and philosophical dimensions of international relations.

[2] The former general had written to a friend that he found it "almost incomprehensible that no American university has undertaken the continuous study of the causes, conduct and consequences of war.

[4][5] In a March 1950 speech, Eisenhower said the purpose of the institute would be to "study war as a tragic social phenomenon – its origins, its conduct, its impact and particularly its disastrous consequences upon man's spiritual, intellectual, and material progress.

"[2] Eisenhower was also instrumental in raising money for the new entity,[2] making use of his fundraising prowess among his network of wealthy friends and acquaintances,[3] in particular Edward J. Bermingham and Clarence Dillon.

The institute also helped foster the careers of several members who went on to high positions in government, including Michael Armacost, Joan E. Spero, Lynn E. Davis, Jean-Marie Guehenno, and Catherine McArdle Kelleher.

"[20] The Institute of War and Peace Studies has never had a teaching program of its own; rather, instruction is carried out through the university's Department of Political Science and the School of International and Public Affairs.