Geopolitical divisions of Europe
Various geopolitical divisions of Europe into various regions were introduced at different times by different experts and authorities. Accordingly, many countries may be included into different regions. For example, Geographically, Armenia is included in Eastern Europe by some references, but the United Nations classifies it as being in Western Asia.
United Nations geoscheme (?—2008) 
According to the United Nations geoscheme, created by the United Nations Statistics Division, Europe is subdivided into Eastern Europe, Northern Europe, Southern Europe, and Western Europe. According to the UN, these geographical divisions are for the purposes of economical statistics only and do not imply any assumption regarding political or other affiliations of countries or territories by the UN.
Central Europe 
Central Europe is the region lying between the variously and vaguely defined areas of Eastern and Western Europe. In addition, Northern, Southern and Southeastern Europe may variously delimit or overlap into Central Europe.  after the end of the Cold War, which had divided Europe politically into East and West, with the Iron Curtain splitting "Central Europe" in half.