Prime Minister Narendra Modi will on July 28 hold a meeting with the Niti Aayog to take stock of the progress made on the 15-year vision document and also share his views on the development strategy with the government's think tank. Secretaries of the states will participate in the meeting  to discuss the vision, strategy and action plan documents. States have been invited to participate in the meeting because they would also work on their 15-year vision, which will eventually help the Centre to prepare its roadmap for the development of the country. Apart from focusing on sectors such as infrastructure, commerce, education and health, the vision document will also cover internal security and defence, which were not part of the earlier five-year plans. The vision document is expected to be finalised by end-2016.