Alastair Francis Buchan

The Hon. Alastair Francis Buchan CBE (9 September 1918 – 4 February 1976) was a leading writer on defence studies in the 1970s.

The son of John Buchan, 1st Baron Tweedsmuir, Alastair Buchan was given the same forename as his father's brother, who had been killed in the First World War. He was educated at Eton College and at Christ Church, Oxford, Buchan joined the Canadian Army and saw active service in World War II. Having worked as a journalist on The Observer, he was appointed Director of the International Institute for Strategic Studies in 1958, Commandant of the Imperial Defence College in 1969 and Montague Burton Professor of International Relations at the University of Oxford in 1972. In 1973 he gave the Reith Lectures on the theme Change Without War.

In 1942 he married Hope Gilmore; they had two sons and a daughter.