Kazakhstan is the most dominant nation of Central Asia economically, generating 60% of the region's GDP, primarily through its oil and gas industry. It also has vast mineral resources, and is officially a democratic, secular, unitary, constitutional republic with a diverse cultural heritage. Kazakhstan is a member of the United Nations (UN), WTO, CIS, the Shanghai Cooperation Organization (SCO), the Eurasian Economic Union, CSTO, OSCE, OIC, CCTS, and TURKSOY.