
Venezuelan prosecutors said Friday they would charge opposition leader Juan Guaido with “high treason” for planning to renounce the country's claim to a disputed border area controlled by Guyana.

Venezuelan President Nicolas Maduro on Tuesday ordered the armed forces to be on alert for a potential attack by Colombia's government and announced military exercises on the border amid the rearmament of a group of former guerrilla commanders.

The United States is not seeking a military intervention as a solution to the economic and political crisis in Venezuela, the U.S. envoy to the troubled South American nation said in an interview published by a Venezuelan online news site on Sunday.

Washington's envoy for Venezuela said on Thursday he was hopeful that the European Union will impose sanctions against Caracas in the coming months and the United States was examining more measures to pressure President Nicolas Maduro to step down.

Venezuela's opposition leader Juan Guaido admitted on Wednesday that talks with the government of President Nicolas Maduro aimed at resolving the country's political crisis “aren't working.” Talks mediated by Norway first took place in May in Oslo with several subsequent rounds in Barbados.

Argentine presidential candidate Alberto Fernandez said on Tuesday that if he wins the October election he would join Mexico and Uruguay in promoting dialogue with Venezuelan President Nicolas Maduro.

Allies of Venezuelan President Nicolas Maduro had discussed holding a presidential election in the coming months during talks to find a breakthrough in the country's political crisis, according to sources. Opposition politicians will travel to Washington to speak to US officials this week, the sources said.

The government of President Nicolas Maduro on Thursday nullified the newly named board of Venezuela’s prized Citgo refineries in the U.S. amid a political battle for control of the country, saying opposition leaders had no right to appoint them.

Conservative president Jair Bolsonaro warned on Monday that Brazil could see a wave of migrants fleeing Argentina if a presidential election in that country returns leftist politicians to power, after their strong showing in a Sunday primary vote.

A new set of unilateral sanctions imposed by the United States on Venezuela this week prompted the concern of the United Nations’ top rights official on Thursday, who said in a statement that she feared they would have a “potentially severe impact” on the human rights of the South American nation’s “long-suffering” people.