NEW, DELHI - INDIA: Indian Prime Minister Narendra Modi (not seen) performs yoga along with others at Rajpath during mass yoga session to mark the International Day of Yoga on June 21, 2015 in New Delhi, India. An estimated 40,000 people participated in the celebrations at Rajpath, with around two billion people taking part across the world. The yoga celebrations are being organised after the United Nations had in December last year declared June 21 as International Yoga Day. (Photo by Vinod Singh/Anadolu Agency/Getty Images)