(CNN) Venezuelan President Nicolas Maduro was sworn in for a second term on Thursday amid a longstanding economic crisis and pressure from some Latin American neighbors that won't recognize his presidency after a disputed election.

The socialist president defended his legitimacy in a speech after his swearing-in at the country's high court in Caracas, decrying what he said was a "permanent campaign of lies" about him and his late predecessor, Hugo Chavez.

"We're a real democracy and I, Nicolas Maduro Moros, I am a truly democratic president," Maduro said in a televised address.

But the regional Organization of American States has said it won't recognize his new term. The May election that returned Maduro to power was boycotted by opposition groups and largely discredited by opponents in his country, with hundreds of complaints of election violations and a low turnout.

The OAS said Thursday its member nations voted 19-6, with eight abstentions, to not recognize the legitimacy of Maduro's government.

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