Russia & Turkey: Europe or Asia Pinned

How would you prefer Russia and Turkey to be classified? Both countries span Europe and Asia, but most of the models I checked were born on the European side. I can place them in either region depending on what works best for the team structure.

I have always considered Turkey part of Europe but I could also see why it could also be part of "Asia". I think anything on the right of the red line should be considered Asia:

Russia in Europe and Turkey in Asia.