Surely Bitcoin is already an international currency.. You can use it anywhere in the world.. that's the point of it.
It is really not yet accepted everywhere in the world, though accepted in a lot of places online but when we see offline we wont get a lot of places to spend our bitcoins unless we are from Brazil or somewhere near there because there are a lot of places accepting bitcoin in that side of the world.
You can use bitcoin in a offline mode, just ask to someone buy for you and save in a paper wallet or on a pendrive or whatever, at least you can hold it.
Brazil is huge, if have 150 places that accept bitcoin, you will never find one near you, so no.
Yes bitcoin is a international currency but just few people uses it.