The Saudis have a missile base where these Scuds hit that have Pakistani nukes ontop of old Chinese surplus DF-3 Missiles.
Probably why it is being kept quiet
http ://www.telegraph.co.uk/news/worldnews/middleeast/saudiarabia/10172533/Graphic-Saudi-Arabias-missile-base-with-launch-pads-aimed-at-Israel-and-Iran.html
http s://en.wikipedia.org/wiki/Al-Watah_ballistic_missile_base
http ://news.ihsmarkit.com/press-release/defense-risk-security/ihs-reveals-saudi-arabias-undisclosed-missile-site
Using satellite imagery, IHS Jane’s Intelligence Review identified an undisclosed surface-to-surface missile facility in Saudi Arabia. With a different layout to the previously documented Al Sulayyil and Al Jufayr missile bases, this new third site potentially serves as a training and storage complex with the ability to perform operational missile launches.
There are two launch pads at the facility, one appearing to be aligned on a bearing of approximately 301 degrees and suggesting a potential Israeli target, and the other oriented along a bearing of approximately 10 degrees, ostensibly situated to target Iranian locations.
IHS Jane’s Intelligence Review assesses that the site likely has a limited operational capacity within a defined target set, and could serve as an off-site storage point for additional missile airframes and propellant stocks.
"Our assessment suggests that this base is either partly or fully operational, with the launch pads pointing in the directions of Israel and Iran respectively. We cannot be certain that the missiles are pointed specifically at Tel Aviv and Tehran themselves, but if they were to be launched, you would expect them to be targeting major cities. We do not want to make too many inferences about the Saudi strategy, but clearly Saudi Arabia does not enjoy good relations with either Iran or Israel,” adds Robert Munks, deputy editor of IHS Jane's Intelligence Review.
Saudi Arabia’s reported attempts to acquire more modern delivery systems do not appear to have been fruitful. This means that Riyadh would have to rely on its ageing fleet of Chinese Dong Feng-3 (DF-3) surface-to-surface missiles. Purchased in 1985, the DF-3 has a range of between 2,650 and 4,000 km dependent on the warhead weight, and is nuclear-capable.