Aerial view of ships
Media playback is unsupported on your device

US and S Korea in naval exercise

The US and South Korea have begun a major military exercise in the Sea of Japan, despite threats of retaliation with nuclear weapons from North Korea.

Washington and Seoul say they want to send a clear signal to the North, following the sinking of a South Korean warship in March.

The BBC's John Sudworth reports from on board the USS George Washington warship.

  • 27 Jul 2010