The civil war (Nicaraguan Revolution) of the 1980s left 16 of Nicaragua's 17 provinces affected by anti-personnel mines. These were particularly rural and impoverished areas. After having cleared over 179,000 anti-personnel mines from its territory and half a million pieces of unexploded ordnance, Nicaragua declared itself free of landmines. It did so supported by a number of organisations including the OAS. There are however, at least 1,200 surviving victims of these weapons.