Shelling Of Yeonpyeong, Korean Peninsula

It was reported that North Korea fired more than 100 shells and South Korea fired 80.
Cause
The North Korean actions were believed by some experts to have been at least partially due to the succession of power taking place in the North Korean government, with Kim Jong-un appointed as the designated successor to Kim Jong-il, and the role of the North Korean military in foreign policy. Robert Kelly, an assistant professor at Pusan National University in South Korea, says that Seoul's increasing global stature may have provoked Pyongyang. "My primary guess is that this is a response to the recent international prestige taken by South Korea at the G20. The G20 highlighted North Korean backwardness in the same way that it highlighted that South Korea was a partner of this global elite organization, setting international rules and the North Koreans don't like this", he said. It has also been suggested that the provocation is linked to the North's need for food aid. Other reports suggest that North Korea retaliated after South Korea fired dozen of shells during military drills off the west coast.