A former Saudi Arabian general said in an interview that Saudi Arabia has purchase Chinese Dong-Feng 21 ballistic missiles.
He did not say which variant of the missile the country bought, bu did mention the DF 21 is capable of carrying a nuclear warhead.
Saudi Arabia did purchase the DF-21 in the past, but the US conditioned its approval of the sale in that it not be a nuclear capable version of the missile.
The missile has a range of between 1000 to 1700 mile, and is believed to have a top speed around mach 5.
The missile is specially designed to also be used as an anti-ship ballistic missile, and is difficult to intercept.
It is suspected that a single Chinese DF-21 would probably sink an aircraft carrier.
Saudi Arabia is probably buying and announcing the purchase as a message of deterrence to Iran.