Complex sentence: Behind Sarkozy is Prime Minister of the United Kingdom Gordon Brown who became Prime Minister on 27 June 2007 and Prime Minister of Japan Yasuo Fukuda who assumed office on 25 September 2007.
Split into simpler sentences: Behind Sarkozy is Prime Minister of the United Kingdom Gordon Brown who became Prime Minister on 27 June 2007. Last in seniority is Prime Minister of Japan Yasuo Fukuda who assumed office on 25 September 2007.