Brazil's highest court on Wednesday upheld most of a controversial presidential decree raising the country's Financial Operations Tax (IOF), handing a revenue-boosting win to President Luiz Inacio Lula da Silva's government.

A US trade probe suddenly ordered by President Donald Trump on Brazil sent shockwaves through President Luiz Inacio da Silva’s government, according to a senior Brazilian diplomat who described it as an unwarranted threat that has helped to plunge relations to their lowest point in over a century.

The trade investigation ostensibly regards unfair trade practices and will examine concerns such as Brazilian tariffs and digital trade policies.

Brazilian President Luiz Inácio Lula da Silva has visited former Argentine President Cristina Fernández de Kirchner at her home.

Brazil plans to launch an international fund to finance the protection of tropical forests at the next UN Climate Change Conference later this year, President Luiz Inácio Lula da Silva said on Monday.

Brazil has yet to hear a response from Washington about an offer it made in trade talks two months ago, Vice President Geraldo Alckmin said on Monday, after U.S. President Donald Trump slapped much higher tariffs on Brazil last week.

A prosecutor has asked Brazil's Supreme Court to find ex-president Jair Bolsonaro guilty of plotting a violent coup after a trial that saw President Trump try to intervene.