The BSEC PERMIS Secretary General, Ambassador Michael B. CHRISTIDES, was invited by the Minister of Tourism of the Republic of Bulgaria, H.E. Ms. Nikolina ANGELKOVA and the Former Secretary General of the UNWTO, Dr. Taleb RIFAI, to participate at an international event titled “Investing in Tourism Sustainability Conference” (ITSC), held in the Bulgarian Black Sea Resort Sunny Beach on 30-31 May 2019.