North Korea prepares missiles; South beefs up defenses

SEOUL, South Korea — North Korea prepared to test-fire missiles at launch pads on both of its coasts, reports and experts said Tuesday, as South Korea beefed up its naval defenses.

The moves further heightened soaring tensions in the region following North Korea's underground nuclear test last week, and came as speculation grows that leader Kim Jong Il has selected his third son to inherit rule of the secretive communist country.

North Korea may soon launch three or four mid-range missiles, believed to be modified versions of its Rodong series, from its east coast, South Korea's Yonhap news agency reported. An American military official confirmed an intercontinental ballistic missile capable of striking the U.S. was being readied at a base on the North's west coast.

The U.N. Security Council is considering measures to punish the North for the nuclear test, and U.S. Deputy Secretary of State James Steinberg said Tuesday that Washington is looking for "creative ideas."

"There are a number of very creative ideas that we are sharing with partners," he said after a talk with Japanese Prime Minister Taro Aso in Tokyo.

Pyongyang has countered that it will not accept any punishment and has warned it won't respect the 1953 truce that ended the Korean War if it is provoked.

Fearing skirmishes off its coast, South Korea, whose troops are already on high alert, sent a high-speed ship equipped with guided missiles to its western waters, where the North was reportedly staging amphibious assault training.

The ship is ready to "frustrate North Korea's naval provocation intentions and destroy the enemy at the scene in case of provocations," the navy said in a statement.

South Korea is also sending coast guard ships to escort fishing boats near the western sea island of Yeonpyeong.

The long-range missile being prepared by the North could be timed to coincide with a June 16 summit in Washington between South Korean President Lee Myung-bak and President Barack Obama.

It is believed to have a range of up to 4,000 miles (6,500 kilometers), the JoongAng Ilbo newspaper reported, citing an unnamed South Korean official. That would put Alaska and the Pacific island of Guam, which has major U.S. military assets, within range.

Satellite images indicated the North had transported the missile to the new Dongchang-ni facility near China, Yonhap reported.