off course the bitcoin is already become a international currency now because it is using by so many people of varrious countries .the performance of bit coin is also accepted by users so it become verry popular site now a days.
bitcoin is used by various people around the world from different countries and it proves that bitcoin worth anywhere and I think now we can say that bitcoin is an international currencyYes since almost country has an access on using bitcoin, it is just that our choice to use it. I hope one day this international currency be implemented and accept by the government. How kool will it be when we shall see all nations, one currency and that too is bitcoins.
I dont think that it will happen in very soon or not possible because to become international currency it has to be in large circulations. Most of them forget that Bitcoin is a good for investment like gold and in some aspects it can be used as online currency but it to become international currency is too small chances. It can become online currency and good for investment