History is not encouraging. In tiny countries without resources or neighbors, megalomanic despots come and go without much notice in the wider world, but when they have the resources, they tend to lash out. Example: The Paraguayan caudillo Lopez Solano, who intermeddled in an Uruguayan civil war and started a three-on-one war in which two-thirds of the manhood of Paraguay was killed on the battlefield, including the caudillo himself. Paraguay remained impoverished well into the reign of dictator Alfredo Stroessner in the 1960's.
As an odd coda, the end of Paraguay's struggle with Brazil, Argentina, and Uruguay saw a diplomatic struggle over territory that, by the agreement of all parties, the United States was called upon to mediate.
President Rutherford B. Hayes's proposed resolution was not overly harsh on Paraguay and left an important territory in their hands, as a result of which, in modern Paraguay, President Hayes has a special day dedicated in his name, in memory of America's friendship toward a prostrate and friendless people in the extremity of their humiliation. It is still a big deal in Paraguay, celebrated the way Cinco de Mayo is here in parts of the United States, with fireworks, illuminations, salutes, and parties.