A large 4-day exercise involving U.S and South Korea forces is under way in the Sea of Japan.
It comes in response to the sinking of a South Korean warship, the Cheonan, four months ago.
A large 4-day exercise involving U.S and South Korea forces is under way in the Sea of Japan.
It comes in response to the sinking of a South Korean warship, the Cheonan, four months ago.