Stern, sharp and shrewd, Narendra Modi fought his way off the streets to become one of India's most popular and polarising prime ministers. There is no middle ground between admirers and adversaries of the man -- now running for a second term -- who helped his father run a railway station tea stall before launching his career in nationalist politics. The 68-year-old makes much of his humble roots while unashamedly portraying himself as the tough guy protecting India's national security and Hindu values, pressing its claims to be the world's rising power.