More than 200 Patriot Air Defense Systems with PAC-3 enhancement may be sold to Saudi Arabia under the U.S. Foreign Military Sales program.

The U.S. Defense Security Cooperation Agency, which acts as the middle man for FMS deals, said in its required notification to Congress the possible deal carries a value of $1.750 billion.

"The proposed sale will help replenish Saudi's current Patriot missiles, which are becoming obsolete and difficult to sustain due to age and the limited availability of repair parts," the agency said.

"The purchase of PAC-3 missiles will support current and future defense missions and promote stability within the region."

The Saudi shopping list is for 202 Patriot Advanced Capability-3 missiles with containers, PAC-3 telemetry kits, fire solution computers and launcher station modification kits. Also included are missile round trainers, Patriot automated logistics systems kits, spare and repair parts and ground support equipment.

Technical and logistics support services and other related elements of logistics and program support would also be part of the deal.

"The program will contribute to the foreign policy and national security of the United States by helping to improve the security of a partner which has been, and continues to be, an important force for political stability and economic progress in the Middle East," DSCA said.

The principal contractors would be Lockheed Martin Missiles and Fire Control and Raytheon.