This is scary:
An underreported attack on a South African nuclear facility last month demonstrates the high risk of theft of nuclear materials by terrorists or criminals. Such a crime could have grave national security implications for the United States or any of the dozens of countries where nuclear materials are held in various states of security.
Shortly after midnight on Nov. 8, four armed men broke into the Pelindaba nuclear facility 18 miles west of Pretoria, a site where hundreds of kilograms of weapons-grade uranium are stored. According to the South African Nuclear Energy Corp., the state-owned entity that runs the Pelindaba facility, these four "technically sophisticated criminals" deactivated several layers of security, including a 10,000-volt electrical fence, suggesting insider knowledge of the system. Though their images were captured on closed-circuit television, they were not detected by security officers because nobody was monitoring the cameras at the time.
There's more to the story at the link including a bit of heroics on the part of one of the plant's employees.
If this attack occured in South Africa one wonders how many succesful attacks have occured elsewhere in countries like Pakistan where word of the breach might never surface in the outside world.
RLC