Once fully developed, a North Korean ICBM could threaten the continental United States, which is around 9,000 km (5,500 miles) from the North. ICBMs have a minimum range of about 5,500 km (3,400 miles), but some are designed to travel 10,000 km (6,200 miles) or further.
U.S. President-elect Donald Trump responded to Kim's comments on an ICBM test by declaring in a tweet last week that "It won't happen!"
A U.S. State Department spokesman said last week that the United States does not believe that North Korea is capable of mounting a nuclear warhead on a ballistic missile.
North Korea has been under U.N. sanctions since 2006 over its nuclear and ballistic missile tests. The sanctions were tightened last month after Pyongyang conducted its fifth and largest nuclear test on Sept. 9.
"The U.S. is wholly to blame for pushing the DPRK to have developed ICBM as it has desperately resorted to anachronistic policy hostile toward the DPRK for decades to encroach upon its sovereignty and vital rights," KCNA quoted the spokesman as saying.
"Anyone who wants to deal with the DPRK would be well advised to secure a new way of thinking after having clear understanding of it," the spokesman said, according to KCNA.