yes there is no doubt about this that bitcoin is a universal currency, as it is used by the people of all over the world.
you believe this bitcoin can interenational real curency
can replace fiat money USD
until now bitcoin not regulated all country in the wolrd only several country this regulated bitcoin
Several countries are working on analyzing using bitcoin to study the possibilities of adopting. But, bitcoin never need any recolonization, it will continue its dominance. So, doubting whether bitcoin will become an international currency or not is not a reasonabe thinking because bitcoin has already taken the world by a storm of its advantages. It is currently ruling and it will continue in that trend.