The UNN Montenegro was a Truman-class dreadnought of the United Nations Navy. After the discovery of the Ring Gates, the dreadnought was tasked with the defense of the Sol Gate alongside the UNN Tripoli and MCRN Sagarmatha as part of the EMC sol gate fleet.
During the Battle for the Sol Gate, Montenegro suffered serious damage from a precision micro-meteor strike. The vessel was later destroyed under an overwhelming and unexpected volley of torpedoes fired from rogue MCRN ships approaching the Ring from the vessel's flank. Montenegro can be assumed lost with all hands.