Guerrillas and Rebels Do for Oil Market What Producers Couldn’t Leftist guerrillas in Colombia, rebels in Libya and militants in Nigeria are succeeding where the world’s biggest oil producers failed, helping keep a 1.5 million-barrel crude surplus from expanding. While Saudi Arabia, Russia and other major producers couldn’t agree on a production freeze earlier this month, disruptions ranging from pipeline attacks to field shutdowns have taken 800,000 barrels a day of crude supply offline this year, according to energy-industry consultant FGE. As the collapse in oil prices cuts their revenue, producers in some parts of the world are finding it harder to keep supplies flowing, according to Citigroup Inc. “The fact of the matter is that the oversupply in the market is very narrow,” said Ed Morse, head of commodities research at Citigroup. “The world has become highly prone to disruptions of supply in vulnerable petro states.” An effort […]