Nicaraguan President Daniel Ortega - 6 March 2008 Nicaragua's President Daniel Ortega says he is breaking off diplomatic relations with Colombia.
The move comes amid a growing crisis over a Colombian raid into Ecuador to kill leftist Farc rebels.
Venezuela and Ecuador have already broken off diplomatic ties and moved troops to their borders with Colombia.
Mr Ortega said "we are breaking off relations because of the political terrorism" carried out by Colombian President Alvaro Uribe.
He made the announcement in his capital, Managua, with Ecuadorean President Rafael Correa at his side.
Mr Correa is on a tour of Latin American capitals to rally opposition to Colombia's cross-border raid on Saturday.
... Colombia has waged a four-decade conflict with Farc rebels who finance themselves through the cocaine trade and by kidnapping hostages for ransom or political gain.
Venezuelan President Hugo Chavez had become involved in mediation efforts to free Farc-held hostages in Colombia, securing the release of six this year.
He branded the Colombian raid a "war crime", adding that Bogota, which receives billions of dollars in aid from Washington to fight drug-trafficking, was just a "lackey of United States imperialism".
He dismissed Colombian claims that a laptop found during its raid on the rebel camp in Ecuador held files indicating that Venezuela had given the Farc $300m (£150m).
- CHAVEZ AND ORTEGA AND CORREA - ALONG WITH BOLIVIA'S EVO MORALES AND THE CASTRO BOYS - COMPRISE OUR HEMISPHERE'S "AXIS OF EVIL".
- THEY ARE A THREAT NOT ONLY TO COLOMBIA BUT TO FREEDOM-LOVING PEOPLE EVERYWHERE.
- IT IS NO ACCIDENT THAT CHAVEZ AND ORTEGA ARE BUDDIES OF AHMADINEJAD.