The question seems to be whether geography or culture (or something else altogether) should define whether one belongs in Europe, or the European Union. As to the question of geography, particularly that of the eastern boundaries of Europe, see Wikipedia's Geography of Europe. Yes, Europe extends even into Russia (the real Russia, mind you) past Moscow, and includes Ukraine, Byelorussia, and Moldavia, as well as the Baltic states, Latvia, Lithuania, and Estonia. Generally, Turkey is not considered part of Europe geographically speaking. In fact, in the schools here in the States, we often referred to it, historically, as Asia Minor. As to the cultural boundaries, that of course is more complex, and a subject I won't even try to address.