Contributor(s): Alvaro Galindo, Margrethe Norum, Adam Sheppard, Randall Williams | Australia recently announced to discontinue investor-state-arbitration provisions in trade agreements; Ecuador abandons its BITS and left ICSID; South Africa seeks to renegotiate its BITs; the Norwegian and U.S. BIT review have stirred much controversy. This colloquium addresses these national experiences and their significance for future developments of investment treaty law. Alvaro Galindo is the former director of the International Litigation and Arbitration Unit at the Solicitor General Office of Ecuador. Margrethe Norum is senior legal advisor at the Norwegian Ministry of Trade and Business. Adam Sheppard is senior research economist at Productivity Commission of the Australian Government. Randall Williams is chief director for Trade Policy and Negotiations at the South African Department of Trade and Industry.