Noting whoever becomes the U.S. president should learn the lessons from his predecessors, the article cited the Korean war in the 1950s, the case of the U.S. armed spy ship Pueblo, the adoption of the DPRK-U.S. Agreed Framework and the DPRK's declaration of having access to nuclear weapons as examples.

An article subtitled "Obama compelled DPRK to join advanced nuclear weapons states" said:

Obama played down the efforts for settling the nuclear issue and ensuring peace on the Korean peninsula, while talking about "strategic patience".

The DPRK formally informed the U.S. that it would put a moratorium on its nuclear test in case the latter defuses tension by replacing the Armistice Agreement with a peace treaty and temporarily suspending its aggressive nuclear war drills but the latter responded to the proposal with continuous war drills against the former.

The DPRK took a decisive measure for further bolstering up its self-defensive nuclear deterrent.

That is just the DPRK's first H-bomb test on Jan. 6.

In the final analysis, Obama, an advocate of the "world without nuclear weapons", compelled the DPRK to join the advanced nuclear weapons states.

U.S. presidential candidates had better bear in mind the lessons taught by their predecessors that the hostile policy towards the DPRK is bound to go bust.