Meanwhile, Brazil this week recalled its ambassador and downgraded diplomatic ties with Buenos Aires after repeated insults from Argentina's firebrand libertarian president Javier Milei, who said Lula was "a thief" and "corrupt." - Brazil demands 'respect' -Lula, 80, has made national sovereignty a key theme of his campaign for a fourth term in office. "Brazil is not only prepared but will also confront anyone from the outside who seeks to interfere in our electoral process," he said Wednesday. Washington said it revoked the visa of Brazil's ambassador because Brasilia had not yet approved its appointment of Daniel Perez, a prominent Florida Republican, as its ambassador to Brazil. Lula also said Brazil was right to deny visas to two US officials last month, who Washington said were coming to discuss "election integrity" among other things.