In an extraordinary act of imperialist intimidation, President Donald Trump announced on Wednesday the imposition of 50 percent tariffs on all products exported by Brazil to the United States.

As Brazil’s Luiz Inacio Lula da Silva and Donald Trump trade blows, the person they are fighting over has sent mixed signals to investors trying to divine who will blink first.

President Donald Trump is threatening to impose 50% tariffs on Brazilian imports — a move that could spike prices of ...