The original spelling is yoğurt, ğ is a silent letter in Turkish so it is anglificated as yoghurt in some languages

Algeria, Bangladesh, Bolivia, Brazil, Chile, China, Cuba, Djibouti, Honduras, Indonesia, Ireland, Lebanon, Malaysia, Namibia, Nicaragua, Oman, Portugal, Spain, Qatar, Turkey, Saint Vincent and the Grenadines, Uruguay, and Palestine.

There seems to be no allies of Russia in the list, do i miss something