'Leadership is about enabling others to be their best'

When Vasant Narasimhan became CEO of drugs firm Novartis, aged 41 he became one of the youngest bosses of a major global company anywhere. Growing up in the US, as the child of Indian immigrants, his has been quite a journey, involving spells rolling out drug programmes in Africa, working at a business consultancy before moving to Switzerland and rising to the top of the company.