In this photo taken on July 21, 2017, a petrol station worker walks past a fuel truck in Pyongyang. Top of the list for new sanctions on North Korea after its sixth nuclear test is an oil embargo, which analysts say would have a crippling effect on the wider economy -- but might do little to curb its weapons programmes. / AFP PHOTO / Ed JONES / TO GO WITH Nkorea-nuclear-missile-oil, FOCUS by Hwang Sunghee (Photo credit should read ED JONES/AFP/Getty Images)
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