The Uruguay pulp mill dispute is a diplomatic dispute between Argentina and Uruguay over the construction of the last pulp mill on the Uruguay River , which is the border between the two countries. The presidents of the states during the escalation of the dispute were Nestor Kirchner (Argentina) and Tabare Vazquez (Uruguay). During the conflict, diplomatic, economic and social relations between the two parties escalated, the dispute also affected tourist flows and freight traffic, as well as other bilateral relations between these states. The hostility between them in the press was called unprecedented, destroying historical and cultural ties [1] . The materials on this case were eventually transferred to the UN International Court of Justice , having received the formal name “Pulp Mills on the Uruguay River” (Argentina v. Uruguay) [2] . The court ruled that although Uruguay did not inform Argentina on time about the planned construction, pulp mills did not pollute the river, so closing them would be unjustified. The conflict ended in 2010, during the presidency of Cristina Fernandez de Kirchner (Argentina) and Jose Mujica (Uruguay), by creating a joint coordination commission for activities on the river.