“If a missile leaves the launch pad we'll be prepared to respond upon direction of the president,” Keating told ABC News.

Keating added that while the North Korean launch remains in the preliminary stage, the US would continue to watch for new developments.

“Should it look like it's not a satellite launch – that it's something other than a satellite launch – we'll be ready to respond,” the Admiral said

The North Korean Central News Agency released this propaganda poster depicting North Korea's military power

Tokyo has also expressed its concern over the planned launch. In 1998, North Korea test-fired a more primitive version of a ballistic missile known as the Taphodon. After the initial launch, the missile experienced technical problems in the primary stage over the Sea of Japan. The rocket sailed over Japan before dropping into the Pacific Ocean after an unimpressive 40-second flight.
Japan has said that it would not tolerate any more future missile launches over its territory.

Considering North Korea’s attempt to make a nuclear test in 2006, the US and Japan have good reason to express their worries about the planned ballistic missile test.

Japan has two warships equipped with multipurpose search and track radar systems and American air-defense SM-3 missiles, technically capable of intercepting a ballistic missile even during the higher altitude stages of a launch. Additionally, Japan has Patriots, the latest modification of American short range air-defence systems, deployed in the central part of the country. These should be able to effectively counter any airborne object that breaches Japan’s territory.

Presently, the North Koreans are assembling radars and other measuring equipment at the Musudan-Ni testing facility in the northeast part of the country to monitor the launch.

It must be stressed that to date nobody outside of North Korea has seen the feared Taphodon-2 missile. Meanwhile, Pyongyang maintains that the exact date of the launch is top secret.