BRASILIA (AP) — The Brazilian president's strong support of Venezuela's authoritarian leader marred the unity Tuesday at a South American summit that Brazil convened in hopes of reviving a bloc of the region's 12 politically polarized countries.

Brazil’s President Luiz Inácio Lula da Silva proposed during his opening speech the creation of a regional currency to rival the U.S. dollar in his bid for the dozen countries to work more closely together.

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