The president has the constitutional power to unilaterally terminate the embargo on Cuba

While the Helms-Burton Act imposes conditions that must be met before the Cuban embargo can be lifted, the president has “the authority to unilaterally terminate the embargo based upon the constitutional primacy of the president’s office in managing U.S. foreign relations.”
Is the Ortega-Murillo administration immune to the effects of the pandemic?

Despite the Nicaraguan reality of social and economic distress, the Ortega-Murillo administration’s mix of authoritarian democracy appears to be holding strong against the destabilizing effects of the pandemic.