New satellite images have shown the alarming speed at which Pakistan is constructing a weapons-grade nuclear reactor.
The aerial images, taken on April 20, show the rapid building progress of the fourth reactor to produce plutonium in Pakistan Khushab facility.
The site was barren in 2009 and the facility %u2018costing billions was undetectable by satellite just 17 months ago, but has since grown at an alarming rate.