Samantha Power was the former US ambassador to the United Nations under Barack Obama. She was in the job at the height of the Syrian Civil War and was intimately involved in President Obama’s deliberations over whether to bomb the Assad regime in response to chemical attacks.

She has also been a journalist, human rights activist, author and foreign policy adviser.

She talks to Krishnan about disagreeing with the former President, her reflections on the conflict in Syria and why she is an idealist in an ever-changing world.