"I don't have to like the president of Chile, Argentina, Venezuela. He doesn't have to be my friend. He has to be president of his country," says Brazil's President Luiz Inacio Lula da Silva in front of diplomats during a graduation ceremony. The leftist leader makes this statement after the ultraliberal economist Javier Milei - who criticises the South American trade bloc, Mercosur, and has made offensive statements against Lula in recent months - won the presidential elections in Argentina.