Tenzin Keyzom Massally Tenzin Keyzom Massally is a technical specialist for fragile states at the United Nations Capital Development Fund, based in Freetown, Sierra Leone. By Tenzin Keyzom Massally Blog15 May 2018 What Can We Learn from Sierra Leone’s New Regulatory Sandbox? Sierra Leone's approach to setting up a regulatory sandbox for financial inclusion holds important lessons for other countries.