The proposed Union of South American Nations (Unasur), like the South American Defense Council, is part of a Brazilian regional strategy to encourage cooperation within Latin America in order to counterbalance the power of the United States and act as a mediator in regional disagreements. While the Unasur proposal may have been formulated in a more rigorous way than other initiatives, its failure to contemplate trade integration means that there is nothing to tie member states together beyond political will.
正在探讨的南美国家联盟（Unasur）像南美国防委员会一样，是巴西为了抗衡美国力量和调解地区分歧，鼓励拉美合作的地区性战略的组成部分。 尽管在起草南美国家联盟提案时可能比其他计划更加谨慎，但其未能将贸易一体化纳入考虑意味着除去单纯的政治意愿外，再没有其他因素可以联系各成员国。