The fight is rooted in years of political history between President Trump and the last two presidents of Brazil.

Brazil is set to summon the U.S. embassy's chargé d'affaires after the diplomatic entity backed ex-leader Jair Bolsonaro. This comes as Trump, via social media, labeled Bolsonaro's trial for an alleged coup plot a 'witch hunt.

For the third time in three months, Donald Trump has identified a foreign ally facing legal trouble. And also for the third time in three months, the American president has condemned the foreign case as a “witch hunt.