Mr Obama was briefed immediately on the suspected poisoning of the 41 year-old, which Chinese officials are linking to Mr Heywood’s powerful political allies, when American diplomats were told of the murder allegation. Gu Kailai, Mr Heywood’s former business partner and the wife of Bo Xilai, a senior politician who had been tipped for the highest political office, is suspected of ordering the Briton’s murder in a case at the centre of a political storm in China. The couple have disappeared from sight as the Communist Party attempts to regain stability....... Mr Obama was informed of suspicions over Mr Heywood’s...