Honduras's de facto leader said he may give up his presidential duties for a week so voters can focus on an election.
Venezuelan soldiers on Thursday blew up two makeshift foot bridges that stretched across the border to Colombia.
Chile's President Michelle Bachelet condemned comments by Peru's leader Alan Garcia over a spy scandal.
Brazil must respect human rights as it moves to contain violence in Rio de Janeiro ahead of the World Cup Olympics.
Street protests and strikes in Argentina have given President Cristina Fernandez a political headache.
Battling with one of the world's highest murder rates, Venezuela crushed more than 30,000 guns seized from the streets.
Colombia brought what it called threats of war from neighboring Venezuela to the U.N. Security Council on Wednesday.
Brazil 's president denied Wednesday that underinvestment was to blame for the worst power outage in a decade.
Ousted Honduran President Zelaya and de facto rulers in power returned to the negotiating table on Thursday.
The image of this Brazilian city has changed from victory of Olympic bid to one embroiled in a bloody war with itself.