North Korea has conducted motor tests to improve its long-range missiles after a failed launch in April, a US think tank said Monday after reviewing new satellite images.
Since the embarrassing flop in April, the communist regime appears to have carried out at least two tests of large motors needed for rockets and worked on a launch platform, the US-Korea Institute at Johns Hopkins University said.
The institute examined commercial images of the Sohae satellite launch station between April and September and found that 34 fuel tanks had been moved and vegetation appeared to be burned, next to a flame trench stained with an orange residue.
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