A 2016 report by Hans M. Kristensen stated that "The F-16s were considered to be the first planes that are nuclear-capable in the Pakistan arsenal and the French Mirage III was upgraded as well to carry a new air launch cruise missile. But the United States made its case. What Pakistan does once they get the planes is inevitably up to them," he said. The report also stated that Pakistan is obliged under the terms of its contract to ask the US for permission before the fighters are converted. To date, the US has given only two countries (Pakistan and Israel) implicit permission to modify their F-16s to carry nuclear warheads.