Russia and India have signed a framework agreement enabling construction of the 'third stage' of the Kudankulam nuclear power plant, including an intergovernmental credit protocol for implementation of the project. The documents were signed yesterday at the 18th Annual Russian-Indian Summit, held alongside the St Petersburg International Economic Forum, by Valery Limarenko, president ASE Group, and Sri Sharma, chairman and managing director of the Nuclear Power Corporation of India Ltd.