On February 3, the U.S. ambassador to south Korea said that the DPRK should return to international community by giving up its policy of pursuing simultaneous nuclear and economic development or face continued sanctions and isolation and that it would face growing costs if it continues to stick to its nuclear weapons program.

From the outset of the year, politicians and military bosses of the U.S., including its president, have cried out for "additional sanctions" on the DPRK and its "collapse", getting hell-bent on the moves for military pressure.

But the history shows who will have to pay growing costs in the nuclear confrontation between the DPRK and the U.S.

In fact, the persistent U.S. threat of preemptive nuclear attack on the DPRK compelled the latter to have access to nuclear weapons.

It was not until the DPRK's successful launch of satellite that the Clinton administration of the U.S., which had insisted on "ad hoc inspection" of the DPRK's nuclear facilities, clinging to the "rumor of collapse in three years", expressed its willingness for improved relations.

The Bush administration listed the DPRK as an "axis of evil" and spread a rumor of its "uranium enrichment" to put pressure upon it over the nuclear issue. But such pressure led the DPRK to successful nuclear test and possession of nuclear deterrent and, consequently, the U.S. could not but delete it from the list of "sponsors of terrorism" and put an end to the application of the "Trading with the Enemy Act" to it.

However, the present Obama administration of the U.S. has tightened its hostile policy towards the DPRK, brining about unimaginable consequences.

It adopted a policy of "strategic patience" envisaging that tightened isolation and blockade would lead the DPRK to dismantlement of its nukes and changes. To cope with it, the DPRK came to arm itself with diversified precision nuclear striking means and advanced a strategic line of simultaneously pushing forward the economic construction and the building of nuclear force.

The DPRK National Defence Commission in a statement on Feb. 4 declared the stand that since the U.S. hostile policy toward the DPRK is getting extremely ferocious, the army and people of the DPRK would take stronger counteraction of justice and write the last page of the U.S. history of shameful defeat about its final ruin exactly on the U.S. land.

In this regard, a Russian expert on the Korean affairs said that it is hard to rule out the possibility of war on the Korean Peninsula.

Even think tanks of the U.S. claimed that the Obama administration's policy of "strategic patience" has led the DPRK to the intensified development of nukes.

The U.S. should squarely face up the history and reality.