South America's leaders will gather in Brazil's capital on Tuesday as part of President Luiz Inácio Lula da Silva's attempt to reinvigorate regional integration efforts that have previously floundered amid the continent's political swings and polarization.
Analysts say Lula senses an opportunity for integration because of the political affinities of the region’s current governments and appears to want to test leaders' willingness to cooperate through a revived Union of South American Nations, or Unasur.
