Sleaze Allegations Mount Around Macron Ally

French prosecutors have launched a preliminary investigation into a property deal involving Richard Ferrand, one of President Emmanuel Macron's ministers, on the same day his new government outlines a bill on cleaning up politics.

Also in the programme; we explore what it would mean if President Trump pulls out of the Paris Climate Change Deal; and we hear from the 19 year old who has developed an app to monitor ' dark advertising' and its influence on elections.

(Photo: French President Emmanuel Macron and his ally Richard Ferrand at the headquarters of the tour operator group Salaun as part of a campaign visit to Brittany, on January 16, 2017 in Ploeven. Credit: Fred Tanneau/AFP/Getty Images)