Building an academic career abroad
My guess is that you could move without a lot of turmoil. As you describe your background it seems pretty solid. 

But you could try an intermediate approach first. I'm assuming you are still active. I suggest that future papers be in English (or some European language) and submitted to journals there. I also suggest that you make sure to reference your older work that isn't in English as appropriate. 

You can, in parallel, see to getting some of that work (the stuff you cite) translated. If you need practice in English you could use the older work as practice to get an English body of work available, even if on some informal sites. You are probably the best person to do this sort of translation, actually. And if it improves your language skills, so much the better, though you may not need that, I realize. 

You can also, if funding is available, start to make a presence in conferences in one or more of the countries you'd consider moving to. Preferably get on the program with talks on new stuff that references the larger body of work. 

It might be easier to move if you establish some visibility in the world you want to move in to, but it may not be essential to do that. 

And if you have a tenured position somewhere, or even a tenure-track position, you can often move and get some credit for that, resulting in a shorter probationary period than the typical (for the US) seven years.