North Korea announced the launch plans in February, which is due to take place from its Musudan-ri launch site. The U.S., Japan and South Korea, who have condemned the launch, believe that the secretive state is planning to test its Taepodong-2 long-range missile.
"Should Japan dare recklessly to intercept the DPRK's satellite, its army will consider this as the start of Japan's war of reinvasion more than six decades after the Second World War, and will mercilessly destroy all its interceptor means and citadels with the most powerful military means" KCNA reported.
KCNA dismissed the long-range missile claims, saying that a Kwangmyongsong-2 experimental satellite was due to be launched for "peaceful purposes," and denied that it posed any threat to Japanese security.
Japan's Security Council gave approval last Friday for the military to destroy the North Korean rocket should it pose a threat to Japanese security.
Japan's Kyodo reported that two Aegis guided-missile destroyers had set sail from Nagasaki en route to the Sea of Japan on Saturday to intercept the rocket if required.
UN Secretary General Ban Ki-moon added to the criticism on Saturday, warning that the launch would complicate peace and stability in northeast Asia.
China has stated it has no plans for any special operations against the upcoming rocket launch.
"China has focused on how to defuse tensions and bring about reconciliation... China believes that peace is golden," China Daily quoted Lt. Gen. Liu Chengjun, president of the Beijing-based Academy of Military Science, as saying.
