The Rev Kenneth Greet (obituary, 6 March) did indeed become a vice-president of the World Disarmament Campaign in 1994. However, that was when he stepped down from his previous position of president. WDC was founded by Fenner Brockway and Philip Noel-Baker in 1979 to campaign for the implementation of the final document of the 1978 first special session on disarmament of the UN general assembly – sadly still not achieved. Kenneth was involved from the beginning and after Fenner's death in 1988 succeeded him as president.
Kenneth took an active part in the campaign until his health deteriorated, chairing meetings and conferences. In 2010 WDC merged with Action for UN Renewal under the title Uniting for Peace, and Kenneth continued as a vice-president of the new organisation.
Shortly before Fenner died, he said: "The work isn't finished." Now Kenneth has gone and it is still true. Those of us who are left just have to keep on trying until the human race learns to settle its differences without periodically slaughtering one another and squandering its precious resources on the means to do so.