WMD's including nukes were a key component of Bush's reasons, incorrect as they were, for attacking Iraq.
WTF is going on here!!!??
...Concerns about proliferation: nuclear weapons and ballistic missiles
The Saudi inclination to buy security may have included attempts to acquire nuclear weapons, according to a Saudi defector. Mohammed Khilewi, first secretary at the Saudi mission to the United Nations until July 1994, said that the Saudis have sought a bomb since 1975. According to Khilewi, the Saudis sought to buy nuclear reactors from China, supported Pakistan's nuclear program, and contributed $5 billion to Iraq's nuclear weapons program between 1985 and 1990. If true, these actions would violate Saudi commitments under the Nuclear Nonproliferation Treaty, which Saudi Arabia signed in 1988 to ease concern over their purchase of long-range Chinese ballistic missiles.
While the U.S. government vocally opposes the development or procurement of ballistic missiles by non-allies, it has been very quiet about the fact that Saudi Arabia possesses the longest-range ballistic missiles of any developing country. In February/March 1988, it was revealed that the Saudi regime had bought an estimated fifty CSS-2 missiles from China. The missiles can travel a distance of more than 1,500 miles and deliver a payload of over 4,000 lbs.
The Saudis have also been accused of retransferring U.S. military equipment or technology without U.S. approval in violation of obligations under the Arms Export Control Act. The Saudis allegedly gave Iraq 1,500 U.S. 2,000-pound bombs during the 1980-88 Iran-Iraq War (Los Angeles Times, 14 September 1992). "Inadvertent" transfers of bombs and vehicles to Syria and Bangladesh during the Gulf War have also been reported (Arms Control Today, May 1992). Another "inadvertent" transfer almost took place when an asylum-seeking Saudi F-15 pilot flew his aircraft to Sudan in November 1990. The plane was returned (Washington Post, 15 November 1990).This link gives alot of background on how Saudi Arabia is the biggest customer of US military shit and a primary cause of instability in the region as they provide weapons to countries that later become US "enemies".
http://www.fas.org/asmp/profiles/saudi_arabia.htm