Light-water reactors are ostensibly for civilian energy purposes, but such a power plant would give the North a reason to enrich uranium. At low levels, uranium can be used in power reactors, but at higher levels it can be used in nuclear bombs…

It said Hecker told the institute “that the new construction seen in the satellite imagery is indeed the construction of the experimental light-water reactor.”

The institute said the amount of low-enriched uranium needed for a 25 to 30 megawatt reactor could vary “depending on the design of the reactor and whether it will be optimized for electricity production or weapon-grade plutonium production.”