Nicaragua's foreign ministry says the decision was taken because the "interventionist and neo-colonial" European country had "offended and keeps offending Nicaraguan families".
Central American country's Congress approves six-month deployment of 230 Russian soldiers, who will hold exercises with Nicaraguan military in Pacific waters.
"We ratify our unwavering decision to leave the Organization of American States," Managua says, describing the Washington-based entity as interventionist and controlled by the United States.
UN rights council says it is seriously concerned by the deterioration of the human rights situation in Nicaragua and the impunity of those responsible.
Government alleged financial crimes were committed through a press freedom training and defence centre that Chamorro directed for 20 years and which has since been shuttered.
Sanctions were imposed on several regime officials, including officials of the telecommunications regulator, which allegedly ran a social media troll farm to help Daniel Ortega win last year's elections.
The move came after Nicaraguan government broke relations with Taiwan on December 9 and last week it seized Taiwanese embassy and diplomatic offices, saying they belong to China.
Managua says "there is only one China existing in the world," in a recognition of the "One China" policy and reducing Taipei's dwindling pool of international allies.
Ortega’s rivals consider the contest undemocratic, accusing the incumbent president of detaining opponents and business leaders, canceling rival parties, and criminalising dissent.
Official partial results show Ortega, the Americas’ longest-serving leader, has won re-election with 75 percent of the vote in polls denounced by US President Joe Biden as a “sham”.
Opposition leader Noel Vidaurre was put under house arrest for "undermining the sovereignty" of the country, in the latest of a series of arrests condemned by the US and European Union.
The Nicaraguan government launched a crackdown on the opposition parties, arresting five presidential candidates and several other leaders in recent weeks.
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