Despite being one of the world’s largest economies, Brazil never had much of a role at the global diplomatic top table. Though not for lack of trying. For decades, Brazil has lobbied for a permanent seat on the United Nations’ Security Council, as has tried to act as a mediator in Middle-Eastern affairs—to uneven rates of success. In 2014, for instance, Brazil criticized Israel’s “disproportionate use of force in Gaza” and was called a “diplomatic dwarf” in return.
In South America, however, Brazil’s sheer size and importance always guaranteed the country an important stake in regional affairs. And, at...