Europe is 10 million km - why to skip some countries just because they are not part of a "political" union? This article is about analysing the genetics of peo

Europe is 10 million km - why to skip some countries just because they are not part of a "political" union? This article is about analysing the genetics of people living in Europe, so the entire continent must be considered and "historically" Europe extends until west Russia. If you consider only the European Union, you kind of exclude the British, who share a lot with the rest of the continent.