North Korea is 100 Pure.turks are the least mixed ethnic element of anatolia.because of religion, turkmen alevi and turkmen alawites did not get married to people with different religions for almost 1000 years.
"turks are turkified or converted anatolians" myth is just an anti-turkish propaganda.
by the way, is there such thing as a "pure nation" ?
also, mongol is just an ethnicity, it doesnt represent the entire central asian populations.
when you say it like "turkic mongol, this mongol, that mongol" it sounds like there are only mongols in central asia.
And yes,there are othe people in Central Asia like Kazahstan,Turkmenista, Tajikistan, Uzbekstan,...