North Korea's Gambit
In mid-May the South Korean government presented clear evidence, in the form of torpedo remains with North Korean markings, that the north had sunk the southern corvette Cheonan . The torpedo was apparently a North Korean-made acoustic weapon, an example of which the South Koreans had previously recovered. It had seemed unlikely, at least to this author, that the North Koreans would deliberately have sunk a South Korean warship in South Korean waters. Against that, it seems that those using torpedoes often imagine that they are anonymous weapons.