Nicaragua's arguments in the border dispute include a map of Costa Rica without the Nicoya peninsula, claiming that the maritime limits disputed before the ICJ should not take that territory into account.
Nicaragua will have until June 2 to submit a response. Justices then will issue a final ruling on the damage compensation figure and on a deadline to make the payment.
Costa Rica asked the International Court of Justice to add a new complaint against Nicaragua to an ongoing case of a border dispute first filed in 2014.
