President Donald Trump announced Wednesday he planned to hit Brazil with a 50% tariff, in part due to the treatment of its former president and his political ally, Jair Bolsonaro.

Trump announced a 50 percent tariff on all Brazilian goods, escalating a feud over Brazil’s prosecution of former president Jair Bolsonaro. Brazil vowed to retaliate.

US President Donald Trump unveiled a new round of tariff demand letters on Wednesday, including a 50% rate on Brazil, one of the highest so far announced for the levies which are set to hit in August.