Which country currently has the most title belt holders?

Ya but Kazakhstan is a former soviet state, almost all of there fighters fight with a Eastern European style and some of their boxers are basically Russian and most of them are some part Russian . Kazakhstan compete in the European area in soccer and in some sports so I'd consider Kazakhstan half European half asian. It's called a transcontinental country for a reason

 

The soccer is a weird one.
Uzbekistan is further west and they compete in Asia.

But yes, they're a hard one to categorize.

 

its considered part of europe on this

also around 35% of its population is either russian or eastern european so it pretty ok for people to consider it part of europe