They may be lying, or not. Pretty much like how our government lies, or not.
http://www.truthout.org/041909GSix minutes before 1 o'clock in the afternoon, on Jan. 23, a 173-foot-tall, two-stage rocket lifted off from Northeast Asia. Capable of carrying a giant 33,000-pound payload, the rocket's liquid-fuel engine, supplemented by two solid-fuel strap-on booster rockets, generated nearly half a million pounds of thrust before giving way to the second stage, likewise powered by a liquid-fuel engine. After reaching a height of nearly 430 miles, the rocket released into orbit a 3,850-pound satellite, along with seven smaller probes. Other than the small community of scientists interested in the data expected to be collected from the "Ibuki" Greenhouse Gases Observatory Satellite (GOSAT), the rocket's main payload, very few people around the world took notice of the launch. The United Nations Security Council did not meet in an emergency session to denounce the launch, nor did it craft a package of punitive economic sanctions in response.
The reason? The rocket in question, the H-2A, was launched by Japan, at its Tanegashima Space Launch Facility. Deemed an exclusively civilian program, the H-2A has been launched 15 times since its inaugural mission on Aug. 29, 2001. Four of these launches have been in support of exclusively military missions, delivering spy satellites into orbit over North Korea. Although capable of delivering a modern nuclear warhead to intercontinental ranges, the H-2A is seen as a "non-threatening" system since its liquid-fueled engines require a lengthy fueling process prior to launching, precluding any quick-launch capability deemed essential for a military application.
In contrast, on April 5, at 11:30 in the morning, North Korea launched a three-stage rocket called "Unha," or "Milky Way," which it claimed was carrying a single small communications satellite weighing a few hundred pounds. Like the H-2A, the "Unha," better known in the West as the Taepodong-2, is liquid-fueled, requiring weeks of preliminary preparation before launch. Although North Korea declared the vehicle to be intended for launching a satellite, the launch was condemned even before it occurred as "dangerous" and "provocative," unlike Japan's similar efforts.