Yoga guru Baba Ramdev launched a three-day fast on Thursday, demanding immediate action to enact a 'strong' Lokpal bill and steps to bring back black money stashed in foreign banks. Fourteen months after he and his supporters were bundled out of the venue in a midnight swoop by the Delhi Police, Ramdev returned to Ramlila Maidan to give the government his 'last warning' to reveal its strategy on his demands.