On Wednesday, following a cultural performance, Iurie Leanca, Moldova Deputy Prime Minister and Minister of Foreign Affairs and European Integration, opened the fourth session of the Meeting of the Parties to the Aarhus Convention (MOP 4). Gheorghe Salaru, Moldova Minister of Environment noted that much experience has been gained over twelve years of implementation of the Convention. Jan Dusik (Czech Republic), MOP 4 Chair, pointed to MOP 4 theme on the role of the Aarhus Convention in promoting sustainable development. Marco Keiner, Director of the Environment Division of the United Nation Commission for Europe (UNECE), suggested highlighting the Aarhus Convention as the best example of implementation of Principle 10 of the Rio Declaration public participation at Rio+20.