North Korea Warns Region is on Brink of War

North Korea warned Friday that U.S.-South Korean plans for military maneuvers put the peninsula on the brink of war, and appeared to launch its own artillery drills within sight of an island it showered with a deadly barrage this week.

The fresh artillery blasts were especially defiant because they came as the U.S. commander in South Korea, Gen. Walter Sharp, toured the South Korean island to survey damage from Tuesday's hail of North Korean artillery fire that killed four people.

None of the latest rounds hit the South's territory, and U.S. military officials said Sharp did not even hear the concussions, though residents on other parts of the island panicked and ran back to the air raid shelters where they huddled earlier in the week as white smoke rose from North Korean territory.

Tensions have soared between the Koreas since the North's strike Tuesday destroyed large parts of this island, killing two civilians as well as two marines in a major escalation of their sporadic skirmishes along the sea border.

The attack — eight months after a torpedo sank a South Korean warship further west, killing 46 sailors — has also laid bare weaknesses in South Korea's defense 60 years after the Korean War. The skirmish forced South Korea's beleaguered defense minister to resign Thursday, and President Lee Myung-bak on Friday named a former chairman of the Joint Chiefs of Staff to the post.

The heightened animosity between the Koreas is taking place as the North undergoes a delicate transition of power from leader Kim Jong Il to his young, inexperienced son Kim Jong Un, who is in his late 20s and is expected to eventually succeed his ailing father.

Washington and Seoul have pressed China to use its influence on Pyongyang to ease tensions amid worries of all-out war, and a dispatch from Chinese state media on Friday — saying Beijing's foreign minister had met with the North Korean ambassador — appeared to be an effort to trumpet China's role as a responsible actor and placate the U.S. and the South.

The U.S., meanwhile, is preparing to send a nuclear-powered aircraft carrier to South Korean waters for joint military drills in the Yellow Sea starting Sunday.

The North, which sees the drills as a major military provocation, unleashed its anger over the planned exercises in a dispatch earlier Friday.

"The situation on the Korean peninsula is inching closer to the brink of war," the report in the North's official Korean Central News Agency said.

A North Korean official boasted that Pyongyang's military "precisely aimed and hit the enemy artillery base" as punishment for South Korean military drills — a reference to Tuesday's attack — and warned of another "shower of dreadful fire," KCNA reported in a separate dispatch.

China also expressed concern over any war games in waters within its exclusive economic zone, though the statement on the Foreign Ministry website didn't mention the drills starting Sunday. That zone includes areas south of Yeonpyeong cited for possible maneuvers, though the exact location of the drills is not known.

China strongly protested an earlier round of drills in the region but has been largely mute over the upcoming exercises. Beijing could be withholding direct criticism to avoid roiling ties with South Korea and the U.S. and to register its displeasure with ally North Korea.

Washington keeps more than 28,000 troops in South Korea to protect its ally from aggression — a legacy of the Korean War that is a sore point for North Korea, which cites the U.S. presence as the main reason behind its need for nuclear weapons.