(R-L) Presidents of Brazil Luiz Inacio Lula da Silva, Argentine Nestor Kichner, Chilean Ricardo Lagos and Venezuelan Hugo Chavez pose for official photo at the Mercosur Summit in the historic city of Ouro Preto, 70-km southeast of Belo Horizonte, December 17, 2004. Brazil hosted a two-day Mercosur Summit of South American presidents. The south american trade bloc is now in its tenth year. REUTERS/Washington Alves PW