Bolivian President Evo Morales and opposition governors failed to reach an agreement on Sunday after weeks of negotiations and the dispute over a new constitution apparently will be decided by Congress calling a national referendum on the issue.
Brazilian President Lula da Silva's ruling Workers Party, PT, appeared to have held its ground in municipal elections on Sunday but did worse than expected in Sao Paulo, the country's largest city and the main prize of the day.
Argentine president Cristina Fernandez de Kirchner officially marked on Monday the beginning of operations of a South Atlantic oil rig, the first to be fully financed by Argentine government and private investors.