SEOUL: North Korea looked to ratchet up already elevated tensions on the Korean peninsula still further Wednesday, firing a pair of short-range missiles and announcing the liquidation of all remaining South Korean assets on its territory. The moves were a direct response to unilateral sanctions announced by South Korea on Tuesday to punish the North for its January nuclear test and last month's long-range rocket launch. Military tensions have been on the rise ever since the January test - the fourth nuclear device North Korea has detonated in defiance of UN resolutions. The UN Security Council responded with tough, new sanctions, which Pyongyang condemned as a...