Right-wing Brazilians wanted sanctions against the judge prosecuting Brazil’s former president. President Trump opted for something far bigger — tariffs.

Brazilian President Luiz Inácio Lula da Silva's comments raise the risk of a tariffs war erupting between the two countries, similar to what has happened between the U.S. and China.

That is the highest levy announced so far in Trump’s letters to world leaders this week, and comes after he wrote a lengthy message supporting the former Brazilian leader.