Bitcoin can be international but I do not think we are seeing use in every corner of the globe, yet. Some what not wanting bitcoin to replace fiat straight out either, would prefer side by side.
We hope so that bitcoin will be international currency. But, their are some country that they used bitcoin for their shopping, paying bills and other things.
And that is the future, we will use bitcoin to just make whole purchases on every way of our lives and bitcoin will be at the same level like normal currency.