In the past, the preceding presidents, policy-makers, think-tanks of the United States had resorted to all sorts of carrot-and-stick policy in a bid to force the DPRK to dismantle its nukes, but in vain.

Nevertheless, Obama employed the "strategic patience" policy, aimed at "nuclear dismantlement" in the DPRK and its "collapse", with an attitude that the final say and time are on the side of the U.S.

But the reality went against his expectation.

The first round of nuclear test by the DPRK clearly showed that nukes are not monopoly of the U.S. Then its second and third rounds of nuclear tests made it an established fact that the final say and time in the showdown between the DPRK and the U.S. are by no means on the U.S. side.

The DPRK's consolidated position as a nuclear weapons state much upset the U.S. It is well illustrated by the developments in the recent one year.

Last year the U.S. made frantic efforts to isolate and stifle the DPRK over its successful third nuclear test.

To cope with such grave situation, Supreme Commander of the Korean People's Army Kim Jong Un convened an emergency operation meeting on the KPA Strategic Force's performance of duty for firepower strike at 00:30 on March 29. There he ordered the KPA strategic rockets to be standby for fire so that they may strike any time the U.S. mainland and its military bases in the operational theaters in the Pacific and those in south Korea.

Taken aback by the KPA Strategic Force's striking plan, Americans expressed fear that the DPRK would reduce the U.S. mainland into ashes.

In this way, the DPRK responded to a wave of U.S. challenges with its toughest counteractions, while calling for dialogue and peace.

This year the DPRK has worked hard to create an atmosphere for dialogue and peace, but the U.S. launched Key Resolve and Foal Eagle joint military maneuvers by instigating the south Korean puppet forces.

Under such situation, the Strategic Force of the Korean People's Army conducted drills of launching various kinds of rockets and warned that if the U.S. reckless provocation goes beyond tolerance limit, the DPRK's rockets launching drills for self-defense would lead to the most powerful retaliatory rocket attack in a moment.

The U.S. dared not retort the DPRK's action, making various conjectures.

In March last, the U.S. Defense Department noted in its annual report on the DPRK's military capabilities that the DPRK has possessed ballistic missiles capable of hitting most areas of the U.S. mainland.

In this regard, Americans have argued that "strategic patience" is exercised by the DPRK rather than the U.S.

A U.S. expert on the DPRK's nuclear issue declared that Obama's "strategic patience" policy came to failure, saying it is possible for the DPRK to conduct nuclear test at any time and nuclear chain test, too, in a short period.

New York Times said that the current deadlock would only give the DPRK time to go on its nuclear program and the situation would get worse if a solution is not made.

KBS and other media of south Korea, too, said the present situation shows that time is by no means on the side of south Korea and the U.S.

Now is the time for the present U.S. administration to abandon its anachronistic policy. If it persists in its "strategic patience", the U.S. will meet a miserable end.