September's contract WTI crude oil negotiated in New York Mercantile Exchange (Nymex) closed this Monday (20) with a moderate increase of 0.85%, quoted at US$ 82.48/barrel. The same month's contract for the Brent advanced 1.27% in Intercontinental Exchange (ICE), trading at US$ 89.22/barrel. 

In this trading session, fuel prices reversed the downward trend seen in the morning and closed the day higher, driven by the hardening tone of US President Donald Trump regarding the conflict with Iran.

"Every time Iran kills an American soldier, it will pay for that death many times over!" Trump said in a post on Truth Social. "This directive has been relayed to Secretary of War Pete Hegseth, Chairman of the Joint Chiefs of Staff Daniel Caine, and all military leaders," the president concluded.

Furthermore, the Houthis, a paramilitary group in Yemen, announced a maritime blockade against Saudi Arabia. The organization constantly threatens to close the Bab el-Mandeb Strait, which connects the Red Sea to global energy markets. 

This text was translated by machine from Brazilian Portuguese.