US begins process of leaving the Paris Agreement

The notification begins a one-year process of exiting the global climate change accord, culminating the day after the 2020 US election.

Also on the programme the Chilean President, Sebastian Pinera, defends his handling of the protests that have been taking place in the country over the past few weeks. And how permissible is it for agents from MI5 and the UK's other intelligence agencies to break the law to perform their duties? A court case is being held, largely in secret, to define these limits.