actually, i am brazilian and currently preparing myself for a diplomatic career, so i think i can give u an insider view on this
in reality, it's recquired from every single brazilian diplomat to be highly proficient in at least 3 languages other than portuguese, wich are english, french and spanish... what has chenged now, is that the english test alone is no longer enough to disqualify any applicant.. before this new resolution, if u failed the english test but had 100% of correct answers in all other tests you were simply disqualified.. wich doesn't seem very fair... now it's the overall grade that matters.. if you only have a slight difficulty with english, you will have special english classes for the duration of you course at Instituto Rio Branco, wich is brazil's school for diplomats.. if you are interested in checking more about it i can recomend you some websites. just email me...
now, to make things clear, i am not personally in favour of this new rules of admission to IRBr, but things weren't exactly the way u thought they were..