So in recent months an idea kicking around in my head has been a group of East Asian Buddhists over the course of several centuries making their way to Europe where they set up a monastic society in the Alps, preserving in many aspects their culture. While that idea specifically is VERY unrealistic, one thing that I have always been interested in is whether or not Buddhism in any form can make its way to Europe.
I don't mean becoming the dominant faith. Far from it. Instead, have a sizable portion (Say 5-10%) or even an entire country adopting the faith formally or informally. What are the odds of this happening? Where is this most likely to happen? When is it most likely to happen?