North Korea appears to be building new ballistic missiles despite recent warming ties with the Trump administration and pledges to denuclearise.
Unnamed US officials told the Washington Post that spy satellites had spotted continuing activity at a site that has produced ballistic missiles.
Donald Trump met North Korea's Kim Jong‑un in Singapore in June.
After the first meeting between sitting leaders from the two countries, the two men pledged to work towards denuclearisation. Mr Trump later said North Korea was "no longer a nuclear threat".
[Source:BBC News]