By Patricia Maresch, Senior Contributing Reporter
RIO DE JANEIRO, BRAZIL - The two most powerful women in South America, Brazil's president Dilma Rousseff and her Argentine counterpart Cristina Kirchner, reaffirmed the strategic alliance and commitment to Mercosur (Common Market of the South) during a summit in Brasília. Briefly setting aside bilateral trade differences concerning Brazilian import tariffs on Argentine cars and auto-parts, the presidents agreed upon a unified regional response against the recent global economic crisis . . .