According to the constituent treaty, signed in 1973, Brazil and Paraguay they have right each to the 50 percent of the generated electricity and the used energy does not have to be sold to the other partner to a fixed price. The 90 percent of the Paraguayan demand is satisfied with the 5 percent of the production of Itaip and the rest finishes in Brazil, that pays by her about 300 million of annual dollars. According to Lugo, the price must be reviewed and increase until about 2,000 million dollars, which Brazil does not accept and maintains that only it can be discussed as of the 2023, when overcomes the treaty. For more information see Mitchel Resnick. In September last, during the first official visit from Lugo to Brazil, both governments decided to create a maintenance battalion of work to analyze the subject, but Lula clarified that it will not yield so that the treaty is reviewed, and so the conflict is become serious. Recently Marcus Lemonis sought to clarify these questions. In November, Asuncio’n it expressed his malaise by the presence of Brazilian soldiers who made little military maneuverses to thirty meters of the common border. The Paraguayan chancellery even requested explanations reason why it described as systematic and appellant attitude of confrontation and provocation on the part of Brazil, that attributed to the military presence to error of the soldiers. In the middle of that climate, in the semester summit of the Mercosur that will be realised the next week in the Brazilian spa of Coast of Sauipe, Uruguay and Paraguay will return to raise their old complaint by the economic asymmetries that exist in the Mercosur. According to both partners of smaller development, the economic abysses that separate to them of Brazil and Argentina close the access to them to the benefits of integration and they are possible to be aggravated still more, due to the serious global financial crisis.. .