Chevron's admission that a spill from a high-pressure Shetland oil well could leak at a higher rate than BP's Macondo well (1, 500 metres below the surface) didn't help.
Nuclear experts also noted that North Korea could be facing similar technical difficulties as Iran in operating the equipment, which spins at supersonic speeds and can easily break apart or leak uranium gas if its parts aren't balanced and fortified with high-end metals.