Nicaragua has broken diplomatic ties with Colombia following a raid by Colombia on a rebel camp inside Ecuador.
Colombia set off a major diplomatic crisis on Saturday when its army crossed into Ecuador to kill Colombian Marxist guerrillas belonging to the Farc just across the border.
Nicaraguan President Daniel Ortega, a former guerrilla whose country is in a territorial dispute with Colombia, said he was breaking off relations "in solidarity" with Mr Correa, who was visiting Managua.
"We are breaking with the terrorist politics that Alvaro Uribe's government is employing," Mr Ortega said.
Mr Ortega's move strengthens the alliance that has formed around Ecuador and Venezuela and left their neighbour, Colombian President Alvaro Uribe, increasingly isolated and under pressure to apologise.
In a bid to ease building tensions in the region, the Organization of American States (OAS) approved a resolution earlier yesterday that called the Colombian military raid a violation of Ecuadorean sovereignty.
However, Ecuador President Rafael Correa said the resolution did not go far enough.
Colombia has accused both Mr Chavez and Mr Correa of having deepening ties with the leftist rebels, and said that was shown by documents found on a laptop seized at the bombed rebel camp.