The US-based World Council of Credit Unions has launched a manual discussing how to establish and operate sharia-compliant credit unions in developing countries, which could help to broaden the Islamic finance industry's retail customer base. The council hopes the manual will help to develop Islamic credit unions across a wide range of markets. The guide is considered complete but the council also recognises that this is an ongoing project as Islamic finance spreads to other credit union systems. The council used its nine-year experience establishing cooperatives in Afghanistan to create a manual that follows Islamic principles. According to the council, there are now 30 sharia-compliant credit unions in Afghanistan, comprising the world's youngest credit union movement and the only one to claim full compliance with Islamic law.