Yes, grown men need to be circumcised in Turkey to convert to Islam.
Every so often one makes an appearance in the papers, complete with the sunnat dresses and holding the front of his tunic (so it won't touch, presumably), looking completely miserable
I suggested it to DH before we got married (he didn't buy it). I will never forget his face at that moment, and recall it on various occasions:
DH - "I love you so much. I will do anything for you."
Cote - "Well, there is this one thing, if you want to marry me..."
DH -