Western Asia is the westernmost region of Asia, a continent known for its vast diversity in geography, climate, and culture. As defined by most academics, UN bodies and other institutions, the subregion consists of Anatolia, the Arabian Peninsula, Iran, Mesopotamia, the Armenian highlands, the Levant, the Sinai Peninsula and the. West Asia is a geographic subregion of Asia situated between Europe, Central Asia, and South Asia, with a land connection to Africa at the Isthmus of Suez. Unlike terms such as “ Middle East ” or “ MENA,” West Asia is a formal geographic classification. This page follows the United Nations (UN). TrueSize. net helps you see the real landmass of every country and region. Share your discoveries — Copy the. In West Asia naturally wild vegetation no longer occurs in clearly defined zones but is dispersed in small areas. The region is predominantly arid; desertlike depressions such as the Kyzylkum Desert of Uzbekistan and Kazakhstan, the Karakum Desert of Turkmenistan, and the Rubʿ al-Khali (Empty. West Asia, also called Southwest Asia, is the westernmost region of Asia. It encompasses nineteen countries, including Iran, Turkey, Iraq, and Israel, and has a total population of approximately 397.