Batlle firmly backed MERCOSUR, which he saw as instrumental for an open regional integration into the world economy. He favoured strengthening MERCOSUR by forming associations such as the one envisaged in the so-called "4+1" agreement with the United States. He maintained close diplomatic ties with the US at a time when the Pink tide in Latin America was marked by several regional governments that distanced themselves from the US. He had a diplomatic conflict with Cuba, as he criticised the human rights record of the Castro's regime.