Rt Hon Sir Geoffrey Palmer QC is a Wellington barrister. He was a law professor before entering New Zealand politics as the MP for Christchurch Central in 1979. In Parliament he held the offices of Attorney-General, Minister of Justice, Leader of the House, Minister for the Environment, Deputy Prime Minister and Prime Minister. Since leaving politics in 1990 he has been a law professor, a law firm partner, president of the Law Commission, chair of the Legislation Advisory Committee, New Zealand's Commissioner to the International Whaling Commission, and chair of the Panel of Inquiry on the 31 May 2010 Flotilla Incident for the United Nations. He is a Distinguished Fellow at the Faculty of Law Victoria University of Wellington and a Global Affiliated Professor of Law at the University of Iowa. Dr Andrew Butler is a litigator at Russell McVeagh, Wellington. He has extensive experience at trial and appellate level, in both public and commercial law, much of it high profile. He has been an academic lawyer at the Victoria University of Wellington, where he taught comparative constitutional law and human rights law among other subjects. He later became a member of the Crown Law Office. He has published on a range of commercial and public law issues.