The leftist leaders of Cuba, Venezuela and Bolivia have signed a trade agreement to counter a US-led drive to forge a Pan-American free trade area. Cuban leader Fidel Castro hosted Venezuelan President Hugo Chavez and Bolivian President Evo Morales in a show of unity for the strongest critics of the United States in Latin America. Castro, who leads the Americas’ only one-party communist state, hailed his two allies, who call him “big brother.” Full Story