World's youngest PM takes office in Finland Finland's parliament and president swear in Sanna Marin as the country's Prime Minister and appoint her cabinet to office. The 34-year-old Social Democrat took over from Antti Rinne, who resigned last week following a row over his handling of a postal strike. Marin, who becomes the world's youngest serving head of government, leads a centre-left coalition of five parties, of which all are led by women, with only one of the five leaders over 35 years old. IMAGES AND SOUNDBITES