North Korea has expanded a key long-range missile base in the months since a summit between the country's leader Kim Jong-un and US President Donald Trump, according to satellite images published by CNN on Wednesday.
The two men met in Singapore in June and signed a vaguely worded document that pledged to "work toward" the complete denuclearization of the Korean peninsula, though it did not detail specifics on how this would come about.
According to CNN, Pyongyang has upgraded the Yeongjeo-dong missile base in North Korea's mountainous interior and has built up another facility that had not previously been publicly identified.
National Security Adviser John Bolton said Tuesday that Trump thinks the North Korean strongman hasn't met the commitments he made at the Singapore summit. US officials insist on the complete, verified and irreversible denuclearization of the Korean peninsula before tough sanctions are lifted.
But the North has rejected demands for what it calls "unilateral" disarmament, and has instead sought unspecified reciprocal US measures in a gradual process.
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