Usually, wiki is pretty good with common knowledge...
If you look up the individual countries (I did three - Russian, France and Turkey) - all use the English word STOP. Turkey only shows DUR.
http://www.adcidl.com/pdf/Turkey-Road-Traffic-Signs.pdf
http://www.adcidl.com/pdf/Russian-Road-Traffic-Signs.pdf
http://www.adcidl.com/pdf/France-Road-Traffic-Signs.pdf
Good digging. This site suggests that STOP is an EU standard.