North Korea appears to have begun dismantling part of a key rocket launch site in the country's north-west.Satellite images of the Sohae station seen by US-based monitoring group 38 North suggest Pyongyang is complying with a promise made to the US in June.
President Donald Trump said North Korea's leader Kim Jong-un had vowed to destroy an engine test site, but did not specify which one.
Pyongyang has maintained that Sohae is a satellite launch site.
But US officials suspect that it has been used to test ballistic missiles.