Deputy Prime Minister Suthep Thaugsuban is to explain Thailand's stance against the unilateral listing of the Preah Vihear temple to Cambodian Premier Hun Sen. Yesterday's decision by Prime Minister Abhisit Vejjajiva comes after Hun Sen showed regret over the Thai move to reiterate its opposition to the decision by the World Heritage Committee (WHC) and the United Nations Educational, Scientific and Cultural Organisation (Unesco) last year on approving the Cambodian application for listing.