Sir Kennedy Trevaskis was the last High Commissioner of South Arabia - a role he held from 1963-1965 and which provided the pinnacle of his career and yet also his ultimate failure. Trevaskis's imperial credentials were impeccable. He was a District Officer in Northern Rhodesia, followed by service in the Rhodesian Regiment in World War II, District Commissioner in the British Administered Eritrea after Italy's defeat, and finally High Commissioner in South Arabia and Aden colony. But here the British ambition to set up the Federation of South Arabia with Aden was ultimately frustrated by the...