13 March 2019 Ecuadorian president Lenin Moreno announced that Ecuador would withdraw from UNASUR and join the newly created PROSUR. Moreno also asked the bloc to return the headquarters building of the organization, based in Quito. Argentina On 12 April 2019 Argentinian president Mauricio Macri announced that Argentina would withdraw from UNASUR and join the newly created PROSUR. Uruguay On 11 March 2020 Uruguayan president Luis Lacalle Pou announced that Uruguay would withdraw from UNASUR. Structure The presidents of each member nation had an annual meeting, which was the top political mandate. The first meeting was held in Brasilia on 29 and 30 September 2005. The second meeting was held in Cochabamba, Bolivia, on 8 and 9 December 2006. The third meeting was held in Brasília – this meeting should have taken place in Cartagena (Colombia), but was postponed because of tension between Ecuador, Colombia and Venezuela. It was at this meeting that UNASUR was formalized and in which the Constitutive Treaty of the organization was signed. The foreign ministers of each country met once every six months. They made concrete proposals for action and executive decision. The Permanent Representative Committee of the President of Mercosur and the Director of the Mercosur Department, the Secretary General of the Andean Community, the Secretary General of ALADI and the Permanent Secretaries of any institution for regional cooperation and integration, Amazon Cooperation Treaty Organization, among others, also attended these meetings. On 9 December 2005, the Strategic Reflection Commission on the South American Integration Process was created. It consists of 12 members, whose function is to elaborate proposals that will help in the process of integration among the South American nations. These proposals were to be made at the 2nd UNASUR Meeting (2006). The South American Parliament was located in Cochabamba, Bolivia, while the headquarters of its bank, the Bank of the South was located in Caracas, Venezuela. The executive committee, created at the 2nd UNASUR Meeting, was transformed into the Political Commission or Council of Deputies, in accordance with the Decisions of the Political Dialogue. The text prepared by heads of state to form UNASUR was approved at the 3rd UNASUR Meeting in Brasília on 23 May 2008. This meeting was scheduled to take place in Cartagena de Indias, Colombia, on 24–28 January 2008, but was postponed because of tensions between Ecuador, Colombia and Venezuela. Secretary General A Secretary General is the legal