They are saying the warhead he mounted on the missiles was a much lighter weight than what an actual nuclear warhead would weigh, and thus the missile had an extended range.
If he can hit Gaum or Alaska or even Hawaii he can hit the central part of the United states. I think with the guidance systems he has in his missiles he can hit anywhere accurately.
I'm still not sure he has actually miniaturized a warhead to fit on one of his missiles. Without that all he has are some long range fireworks.
Long range fireworks can be deadly to some too. He has ordered more war heads and solid fuel boosters to be made so he is gearing up for something even if it just fireworks.
North Korea's regime has "Succeeded in making a more developed nuke" and fitted it to a new intercontinental ballistic missile, according to the country's state news agency.
There was no independent confirmation of the claims.
North Korean leader Kim Jong Un watched the process at the country's Nuclear Weapons Institute, KCNA reported.
This week, North Korea launched an intermediate-range missile that flew over Japan, further exacerbating tensions in the region and with the United States. Ref. CNN.
Two months without a North Korean missile test is a record for this year: Cause for hope? North Korea has gone two months without test firing a missile, the longest such dry spell this year. Is it reason for hope? Source 8i.