Commander Robert Green served for twenty years in the British Royal Navy. As a bombardier-navigator, he flew in Buccaneer nuclear strike aircraft and anti-submarine helicopters equipped with nuclear depth-bombs. His final appointment was as Staff Officer (Intelligence) to the Commander-in-Chief Fleet during the 1982 Falklands War.
He chaired the UK affiliate of the World Court Project, which led to the International Court of Justice judgment in 1996 that the threat or use of nuclear weapons would generally be illegal. Co-Director of the Disarmament & Security Centre in Christchurch since 1998, he is the author of Security Without Nuclear Deterrence.