Rishi Sunak pledged to work 'night and day' for the 'best country in the world' as the election campaign to take over from Boris Johnson entered its final stage. He will go head-to-head with his rival Foreign Secretary Liz Truss for one last time. Sunak reiterated his vision statement as the first British Indian to run for the top job at 10 Downing Street ahead of the final campaign event this evening. NDTV's Parmeshwar Bawa reports.