The U.S. State Department says it is prepared to engage in dialogue with North Korea only if Pyongyang shows an authentic and credible attitude on denuclearization.
 
U.S. State Department spokesman John Kirby made the remark Tuesday in response to a question on what the nuclear deal with Iran means for North Korea.
 
He said “Pyongyang's attempts to engage in dialogue while keeping critical elements of its weapons program running are unacceptable.”
 
He added that the United States is in close contact with South Korea, Japan, China and Russia to pursue the common objective of peacefully achieving denuclearization on the Korean Peninsula.
 
The spokesman explained the Iran deal shows that the United States is willing to engage countries with which it has had "long-standing differences."