U.S. agents already infiltrated into the computer network of the DPRK several years ago and have run the whole gamut of base espionage to obtain information about its nuclear development, etc.

Truth behind such espionage has already been exposed to the world by a declassified document of the U.S. National Security Agency, testimonies made by former senior officials of the U.S. administration and U.S. media.

The targets of U.S.-sponsored cyber terrorism are not confined to the DPRK.

Cyber attacks are made by the U.S. against most of the countries and regions in the world including anti-U.S. countries, such regional powers as Russia and China, Germany and other competitive allies of the former.

It was none other than the U.S. which perpetrated state-sponsored cyber terrorism, the first of its kind, by mounting a cyber attack by use of the malignant virus Stuxnet upon the computer network of an Iranian nuclear power plant in 2010. It was again the U.S. that is working hard to turn cyberspace into a theatre of war.

Heads of state and government organs and key businesses of various countries have become targets of the NSA's wire-tapping. Confidential information being stored in governments' and personal computers are being hacked by U.S. agents to help the White House shape its policies.

Such hacking attack of the U.S. is an act for igniting a war of aggression as it is aimed at carrying out its cyber military strategy to all intents and purposes.

The keynote of the strategy being pursued by the U.S. is to mount a preemptive cyber attack on a certain target through internet.

To this end, the U.S. already advanced the conception of cyber warfare early in the 1990s and has stepped up arms race and preparations for a cyber war in real earnest in a bid to carry out its military strategy in cyberspace under the pretext of "protecting national interests". The cyber warfare command was organized by the U.S. navy in December, 2002. And this was followed by the formation of cyber warfare units in its air force and army. The U.S. Cyber Command was set up in 2010 to command in a unified manner all the military actions concerning cyber warfare.

Obama signed a secret presidential order concerning the U.S. cyber operation policy in October 2012. Pursuant to it, the U.S. Department of Defense is developing new type weapons that can jam and paralyze military computer systems of other countries although they are not connected to the internet.

As seen above, the U.S. is zealously stepping up preparations for large-scale cyber attacks on other countries, blinded by its wild ambition to dominate the world.

Explicitly speaking, the U.S. cyber military strategy is a thrice-cursed crime as it triggers world-wide race for cyber warfare and throws the world into mayhem.

The U.S. has often made much fuss over cyber attack to give impression that it is a victim of cyber terrorism.

For example, it kicked up the racket of "imposing additional sanctions" upon the DPRK after deliberately linking it with the cyber attack on the Sony Pictures Entertainment.

Such a charade of the U.S. is aimed to create a favorable atmosphere for executing its pre-emptive cyber war by branding sovereign states, notably, the anti-U.S. independent countries, as cyber attackers.

The U.S., though belatedly, should be well aware of the fact that its wild ambition for dominating the world through cyber warfare is no more than a pipedream.