Image provided by Venezuela's Presidency shows President of Bolivia Evo Morales participating in the meeting of the Union of South American Nations (UNASUR, by its acronym in Spanish) in Cochabamba, Bolivia, on July 4, 2013. (Xinhua/Venezuela's Presidency)

 

Image provided by Venezuela's Presidency shows President of Ecuador Rafael Correa delivering a speech during the meeting of the Union of South American Nations (UNASUR, by its acronym in Spanish) in Cochabamba, Bolivia, on July 4, 2013. (Xinhua/Venezuela's Presidency)

 

Image provided by Venezuela's Presidency shows President of Bolivia Evo Morales delivering a speech during the meeting of the Union of South American Nations (UNASUR, by its acronym in Spanish) in Cochabamba, Bolivia, on July 4, 2013. (Xinhua/Venezuela's Presidency)

 

Image provided by Venezuela's Presidency shows President of Venezuela Nicolas Maduro (R) and Bolivia's President Evo Morales (L) participating in the meeting of the Union of South American Nations (UNASUR, by its acronym in Spanish) in Cochabamba, Bolivia, on July 4, 2013. (Xinhua/Venezuela's Presidency)

 

Image provided by Venezuela's Presidency shows President of Venezuela Nicolas Maduro (3rd R), President of Bolivia Evo Morales (2nd R) and President of Ecuador Rafael Correa (1st R) participating in the meeting of the Union of South American Nations (UNASUR, by its acronym in Spanish) in Cochabamba, Bolivia, on July 4, 2013. (Xinhua/Venezuela's Presidency)

 

Image provided by Venezuela's Presidency shows President of Venezuela Nicolas Maduro (L), President of Bolivia Evo Morales (C) and President of Ecuador Rafael Correa (R) participating in the meeting of the Union of South American Nations (UNASUR, by its acronym in Spanish) in Cochabamba, Bolivia, on July 4, 2013. (Xinhua/Venezuela's Presidency)

 

(From L to R) Venezuelan President Nicolas Maduro, Argentine President Cristina Fernandez and Bolivian President Evo Morales participate in a meeting of Union of South American Nations (UNASUR, by its acronym in Spanish) in Cochabamba, Bolivia, on July 4, 2013. (Xinhua/TELAM)

 

Argentine President Cristina Fernandez (C) and Bolivian President Evo Morales (R) participate in a meeting of Union of South American Nations (UNASUR, by its acronym in Spanish) in Cochabamba, Bolivia, on July 4, 2013. (Xinhua/TELAM)

 

Image provided by Venezuela's Presidency shows Venezuelan President, Nicolas Maduro (C), reacting at his arrival to Cochabamba, Bolivia, on July 4, 2013. Nicolas Maduro arrived to Bolivia to assist to the urgent meeting of the Union of South American Nations (UNASUR, by its Spanish acronym). (Xinhua/Venezuela's Presidency)

 

Image provided by Venezuela's Presidency shows Venezuelan President, Nicolas Maduro (C), reacting at his arrival to Cochabamba, Bolivia, on July 4, 2013. Nicolas Maduro arrived to Bolivia to assist to the urgent meeting of the Union of South American Nations (UNASUR, by its Spanish acronym). (Xinhua/Venezuela's Presidency)

 

Image provided by Venezuela's Presidency shows Venezuelan President, Nicolas Maduro, reacting at his arrival to Cochabamba, Bolivia, on July 4, 2013. Nicolas Maduro arrived to Bolivia to assist to the urgent meeting of the Union of South American Nations (UNASUR, by its Spanish acronym). (Xinhua/Venezuela's Presidency)

 

Image provided by Uruguay's Presidency shows President of Uruguay Jose Mujica (L) leaving for Bolivia, in Montevideo, Uruguay, on July 4, 2013. Jose Mujica left for Bolivia to attend the emergency meeting of the Union of South American Nations (UNASUR, by its acronym in Spanish). (Xinhua/Uruguay's Presidency)

 

Image provided by Uruguay's Presidency shows President of Uruguay Jose Mujica (C) leaving for Bolivia, in Montevideo, Uruguay, on July 4, 2013. Jose Mujica left for Bolivia to attend the emergency meeting of the Union of South American Nations (UNASUR, by its acronym in Spanish). (Xinhua/Uruguay's Presidency)

 

Image provided by Uruguay's Presidency shows President of Uruguay Jose Mujica (R) greeting before his visit to Bolivia, in Montevideo, Uruguay, on July 4, 2013. Jose Mujica left for Bolivia to attend the emergency meeting of the Union of South American Nations (UNASUR, by its acronym in Spanish). (Xinhua/Uruguay's Presidency)