Challenge to popular arbitrator Brigitte Stern is rejected; colleagues see no grounds for disqualification due to multiple appointments by Venezuela and non-disclosure January 4, 2011Arbitrator Challenges and Recusals, Energy Disputes, ICSID (World Bank), News, Venezuela arbitrator challenges, arbitrator conflicts, venezuela nationalization Luke Eric Peterson You are not logged in. If you are a subscriber, please Login to access. If you are not a subscriber, you can contact us for a rate quote at subscribe@iareporter.com. Alternatively, you can sign up to receive free email headlines here.