For listing purposes, Asia is divided up into five regions: The Middle East, Central Asia, and the Far East. Then Russia and what I'm calling the 'Indian Sub-Continent' combining the Himalayan countries and the islands of the Indian Ocean.
Regardless of any official or political definitions, for me, some countries straddle regions. So sometimes you'll find them appearing in more than one menu. EG. Turkey is in both Central Asia and Europe. Egypt appears in both North Africa and Middle East.
Use the menus on the left to navigate.