A long-frozen conflict in Western Sahara erupted on Friday as Morocco attempted to end a trade blockade by the region’s independence movement, triggering the first major clashes since 1991. Bloomberg quotes the Moroccan army as saying it fired anti-tank weaponry to repel an attack by the Algeria-backed Polisario Front on a military outpost in the disputed territory after Polisario struck positions near the town of Mhabes but did not mention casualties on either side. The apparent escalation came a few hours after Rabat said its soldiers would disperse dozens of pro-Polisario protesters who for weeks have been blocking trade at El Guergarat, an important hub for commerce with West Africa.