 Woon established a new division in the Attorney @-@ General 's Chambers for the prosecution of cases in the Subordinate Courts of Singapore to enhance the development of criminal litigation skills , and recruited a number of young and talented lawyers into the Singapore Legal Service . In 2008 he hosted the International Association of Prosecutors Conference in Singapore . He also assisted in the setting up of the Centre for International Law at NUS to improve international law expertise in Singapore and the region . He was Singapore 's alternate representative on the High Level Task Force for the Drafting of the ASEAN Charter , a key constitutional document for ASEAN , which was signed in November 2007 . Subsequently , he co @-@ authored a book entitled The Making of the ASEAN Charter ( 2009 ) . 
