Which European country is predominantly Buddhist?

It is wonderful that no matter how well rad, no matter how well educated, there is always still so much to be learned.  New facts by which to be delighted.  

I was perhaps 15-20 before I knew that there was a European country with a Muslim majority (Albania).  It has now been joined by Kosovo and possibly by Bosnia (50.1% Muslim).  

All the rest of Europe was/is Christian of various branches.  Or so I thought until today.

Via Ed West, I discover that there is another non-Christian country in Europe.  From Wikipedia, meet Kalmykia, the only predominantly Buddhist country in Europe.  Technically it is a plurality Buddhist with 48% of the population practicing Buddhism, the remaining 52% scattered across various religions.  

It is a republic within the Russian Federation as well.  So not technically a Buddhist majority, and not really an independent state.  But close enough on both accounts to be startling.  

Kalmykia (Russian: Калмыкия; Kalmyk: Хальмг, Xälmıg IPA: [xɑlʲˈməg]), officially the Republic of Kalmykia,[a] is a republic of Russia located directly north of the North Caucasus in Eastern Europe. The republic is part of the Southern Federal District, and borders Dagestan to the south and Stavropol Krai to the southwest; Volgograd Oblast to the northwest and north and Astrakhan Oblast to the north and east; Rostov Oblast to the west and the Caspian Sea to the east. Kalmykia is the only region in Europe where Buddhism is the predominant religion.

The republic covers an area of 76,100 square kilometres (29,400 square miles), with a small population of roughly 300,000 residents. The republic is home to the Kalmyks, a people of Mongol origin who are primarily of Buddhist faith. The capital of the republic is the city of Elista, which has gained an international reputation for international chess competitions.