Suriname is situated between French Guiana to the east and Guyana to the west. The southern border is shared with Brazil and the northern border is the Atlantic coast. The southernmost borders with French Guiana and Guyana are disputed by these countries along the Marowijne and Corantijn rivers, respectively, while a part of the disputed maritime boundary with Guyana was arbitrated by the Permanent Court of Arbitration convened under the rules set out in Annex VII of the United Nations Convention on the Law of the Sea on 20 September 2007.