The context behind the Costa Rican-Nicaraguan border dispute

The dispute between Nicaragua and Costa Rica stems from an island located at the mouth of the San Juan River, which forms the border between the two countries. The dispute has been simmering for a month as a result of Nicaragua’s decision to send troops to the region. Several reasons have been put forward for the action, including the concern of Daniel Ortega, the Nicaraguan president, with narco-traffickers in the region and the need for a military presence to discourage them.