Dr. Dayantha Laksiri Mendis obtained his LLB from the University of Ceylon and was called to the Bar in Sri Lanka. He obtained the MPhil (Cantab) from the University of Cambridge (Trinity Hall) in the UK in International and Relations. Later he obtained a PhD from the Shri Venkateshwara University, India. He was a Research Scholar at The Hague Academy at the Peace Palace in Den Haag and also served as Visiting Scholar for the Centre for International Studies at the Cambridge University, UK.
Dr. Mendis has served as UN Legal Expert (UN/DTCD, New York, USA) and ICAO Air Law Legislation Consultant (ICAO, Montreal, Canada) and Commonwealth Legal Expert (Commonwealth Secretariat, London, UK) and was assigned to many countries and regions of the world. He taught Legislative Drafting at the Athabasca University in Canada. He served as Legal Adviser to the ICRC (Sri Lanka). At a young age, he served as First Parliamentary Counsel and Head of the Parliamentary Division in Sierra Leone (West Africa).
He also served as Sri Lanka’s Ambassador to Austria with accreditation to the Czech Republic, Slovakia, Slovenia and Croatia. He was also the Permanent Representative to the United Nations in Vienna. He was a Member of the UNIDO and the IAEA Board of Governors.
At present, he is the Executive Director of the Lakshman Kadirgamar Institute of International Relations and Strategic Studies (LKI).