Last week's dismissal of Bo Xilai, the party secretary of Chongqing province, casts this autumn's Chinese Communist party congress, with the anticipated replacement of President Hu Jintao and Premier Wen Jiabao by Xi Jinping and Li Keqiang, in a dramatic new light.

Bo Xilai, son of a former Communist party leader and veteran of the Long March, has been exploiting his office for a thinly veiled campaign for a place on the party's nine-member standing committee that runs China. His fall was triggered when his righthand man in Chongqing, the police chief Wang Lijun, sought refuge in the American consulate in Chengdu, claiming that his life was under threat from Bo.