According to Kyodo News, the U.S. carried out nuclear tests between April and August under the pretext of examining the efficiency of the stockpiled nuclear weapons by using plutonium this year.

This fact fully revealed that the U.S. initiative to build a "world without nuclear weapons" is nothing but a smokescreen to cover up its wild ambition to dominate the world with nukes and hoodwink the world people.

U.S. President Obama advocated a "world without nuclear weapons" at the outset of his office. He committed himself not to develop nuclear weapons and conduct nuclear tests before the international community.

However, the U.S. nuclear tests have gone on during his office.

Such nuclear tests by use of plutonium were conducted without let-up last year and this year.

The U.S. has run the whole gamut of crimes including nuclear tests and the development of new type nuclear weapons in an effort to reinforce its huge nuclear arsenal. It is sheer hypocrisy and sophism for the U.S. to talk about "denuclearization".

The U.S. is the arch criminal who has posed constant threat of a nuclear war to the world and sparked global arms race.

It is none other than the U.S. that made a nuclear weapon for the first time in human history and has the biggest arsenal of nuclear weapons of various types and brought a nuclear disaster to mankind.

The U.S. tried to use nukes in a bid to turn the situation during the last Korean War favorable to it. It is also creating constant nuclear threat, while keeping a large number of nukes in south Korea and other parts of the world.

The U.S. is wholly to blame for the danger of nukes and a nuclear war increasing worldwide.

It is preposterous, indeed, for the U.S. to talk about the minimization of the use of nuclear substance and its safe management and the prevention of its illegal dealings and "denuclearization" after holding such international meetings as the NPT Review Conference, "Summit for Nuclear Safety," etc.

The "denuclearization" touted by the U.S. is, in essence, a theory for monopolizing nukes to put the whole world under its control with them.

The U.S. is not in a position to dismantle its nukes or opt for their nonuse as it regards them as an all-powerful means for carrying out its policies of aggression.

As long as the U.S. remains unchanged in its nuclear policy for aggression, the army and people of the DPRK will further bolster up its nuclear deterrence for self-defence.