South Korea to take ship case to U.N.

SEOUL (Reuters) - South Korea said on Sunday it would take the case of its sunken naval vessel to the U.N. Security Council in a bid to tighten the economic vice on impoverished North Korea after accusing it of torpedoing the ship.

The March sinking of the Cheonan corvette, killing 46 sailors, has sharply raised tensions on the Korean peninsula, rattled investors in South Korea and threatens to divide major powers in the economically powerful region.