Obituary: Valéry Giscard D'Estaing

Valéry Giscard d'Estaing, France's president from 1974 to 1981, has died at the age of 94; as the head of the United Nations issues a stark warning about the state of the planet, we'll hear from the president of a Pacific island state on the frontline of climate change because of rising sea levels; and we'll hear from the former gang member who's just written a song for his friend killed in a terror attack in London.