Radical left-winger Jean-Luc Mélenchon came third in the first round of the recent presidential election, winning the support of nearly eight million voters. That gives his France Unbowed party enormous clout in this week's negotiations with the Socialists on the possible formation of a left-wing Popular Union. So how are the talks going?
The Socialist Party has accepted certain measures outlined in the Popular Union programme, and has made a number of counter-suggestions.