For Libya U.N. deal, former rebel brigades mean success or failure

One of the members of the military protecting a demonstration against candidates for a national unity government proposed by U.N. envoy for Libya Bernardino Leon, is pictured in Benghazi, Libya October 23, 2015. REUTERS/Esam Omran Al-Fetori

MISRATA, Libya (Reuters) - In Misrata, a statue of a fist crushing a U.S. fighter jet that rebels seized as war bounty from Muammar Gaddafi's compound stands testimony to the city's part in Libya's 2011 revolution.

Four years after they helped defeat Gaddafi, Misrata's armed brigades are expected to play their part among the former rebel forces, tribal fighters and other factions who will determine whether a U.N. plan to end Libya's crisis survives or fails.