The South Korean warship Cheonan was sunk in mysterious circumstances on 26 March 2010. The remarkable events that followed are analysed by Tim Beal and woven into a larger study of the increasingly volatile relations between North and South Korea and US concern about the rise of China.

South Korea's stance towards the North has hardened significantly since the new conservative government came to power. Beal argues that the South moved quickly to use the sinking of the Cheonan to put international pressure on the North, even before the cause of the sinking had been...