South Korea Begins Naval Exercises

South Korea kicked off one of its largest-ever naval exercises on Thursday in waters near a disputed western sea border with North Korea, despite the North’s threat to retaliate by attacking the South’s warships participating in the drill.

The exercises took place where a South Korean navy ship, the Cheonan, was blown in two in March, killing 46 sailors.

South Korean investigators say that the Cheonan was struck by a North Korean torpedo and have demanded an apology. The North has denied involvement.

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