evidence: Which two countries are involved in the "Tigri Area territorial dispute"? Notes: Suriname and Guyana are the two countries that are involved in the "Tigri Area territorial dispute". The Tigri Area is an area that has been disputed since around 1840 by Suriname and Guyana. It involves the area between the Upper Corentyne River (also called New River), the Coeroeni River and the Kutari River. This triangular area is in Guyana known as the New River Triangle. In 1969 the conflict ran high on and since then the Tigri Area is controlled by Guyana and claimed by Suriname. In 1971 both governments in Trinidad agreed that they continue talks over the border issue and withdraw their military forces from the disputed Triangle. Guyana has never held upon this agreement.