World dignitaries are gathering this week for the UN General Assembly. The first speech will come from Brazil's president, Luis Inacio Lula da Silva. Lula's predecessor, Jair Bolsonaro, has become an explosive issue in U.S.-Brazilian relations. President Trump levied a 50% tariff on many Brazilian goods as a penalty for the prosecution of Bolsonaro. Amna Nawaz sat down with Lula to discuss more.

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