The US State Department says it will respond accordingly, were North Korea not to keep its promise to denuclearize.
In response to a news report that Pyongyang had been ramping up efforts to conceal its nuclear activity.
According to VOA news on Tuesday an official from the State Department said "we take KimJong-un at his word that he intends to denuclearize.
If we find that that’s not the case, we will respond accordingly.
The response comes after NBC News citing three senior US officials
reported that North Korea has been building structures to obscure the entrance to a warhead storage facility.