It is now official that four candidates are contenders to head the World Trade Organisation, with Frenchman Pascal Lamy as the EU’s choice. He was the top trade official in the Prodi Commission. The mandate of Thai Supachai Panitchpakdi ends in August.The WTO’s General Council, on which all 148 member states sit, should make its decision by the end of May. Uruguay’s former WTO ambassador Carlos Perez del Castillo is also in the running to chair the proceedings in which the rules are set for the world’s multi-trillion euro trading system. Brazil’s ambassador to the WTO Felipe Seixas Correa is up for the job too, and Mauritius trade minister Jaya Krishna Cuttaree. The new chief would take office on September 1, for a four-year term.