A cargo ship is loaded with wheat in Rosario, Santa Fe province, Argentina. The country's President Cristina Kirchner has accused multinational grain producer Bunge of committing the "biggest tax evasion" in the south American nation's history, worth some 300 million dollars (1.2 billion pesos). AFP - Argentine President Cristina Kirchner has accused multinational grain producer Bunge of committing the "biggest tax evasion" in the country's history, worth some 300 million dollars (1.2 billion pesos).