Satellites raise alarm

SATELLITE images from last week show movement at North Korea’s main nuclear site that could be associated with the reprocessing of radioactive material into bomb fuel, a US think tank says.

Any such activity would underscore the failure of a second summit between US President Donald Trump and North Korean leader Kim Jong-un in Hanoi in late February.

Washington’s Centre for Strategic and International Studies said specialised railcars seen near the Yongbyon nuclear site could indicate the transfer of radioactive material.