Bangalore, Nov 29 (ANI): Air Chief Marshal Arup Raha on Saturday said that India has no territorial ambitions except to get back our lost territories. He said that the strategic gravity has shifted from west to the east, to Asia and Asia-Pacific but security remains a big challenge. Further, Raha said that China is growing in power and there are doubts whether its growth will be peaceful or not so India is fully prepared. Raha added that ISIS is a big challenge to the world which needs to be tackled.