Prince Turki bin Nasser bin Abdul-Aziz, General President of the Presidency of Meteorology and Environment and Chairman of the Executive Office of Council of Arab Ministers Responsible for Environmental Affairs, said that the 20th session of the Council of Arab Ministers concerned with environment, which started here earlier today, will follow up the implementation of the council's decisions taken during its 19th session and the decisions taken by the Executive Office. In a speech today at the meeting of the Council of Arab Ministers concerned with environment, Prince Turki highlighted issues concerning the protection of environment and sustainable development.