Dhaka, July 10 -- President Donald Trump announced a 50 percent tariff Wednesday targeting Brazil as he blasted the trial of the country's ex-leader, and said a US "national security" levy on copper would begin in August. In a letter addressed to Brazilian President Luiz Inacio Lula da Silva, Trump criticized the treatment of his right-wing ally Jair Bolsonaro as an "international disgrace." Bolsonaro is facing trial over accusations he plotted a coup after his narrow 2022 election loss to Lula. In response to Trump's tariff letter, Lula warned of possible reciprocation, writing on X that "any unilateral tariff increases will be addressed in light of the Brazilian Law of Economic Reciprocity." Brazil earlier on Wednesday said it had summo...