World Bulletin / News Desk

Saudi Arabia could reduce valuable security and intelligence cooperation with longstanding ally Washington after a Congressional "stab in the back" allowing 9/11 victims to sue the kingdom, experts warn.

Cutting such cooperation is among the options available to Riyadh after Congress voted overwhelmingly on Wednesday to override President Barack Obama's veto of the Justice Against Sponsors of Terrorism Act (JASTA).

"This partnership has helped provide US authorities with accurate intelligence information" that helped stopped attacks, said Ansari, whose committee is a private initiative to strengthen Saudi-US ties.

JASTA allows attack survivors and relatives of terrorism victims to pursue cases against foreign governments in US federal court and to demand compensation if such governments are proven to bear some responsibility for attacks on US soil.

Saudi Arabia was home to 15 of the 19 Al-Qaeda hijackers who carried out the September 11, 2001 attacks on the United States which killed nearly 3,000 people.

Riyadh denies any ties to the plotters.

The United States and Saudi Arabia have a decades-old relationship based on the exchange of American security for Saudi oil.

Ties between Riyadh and Washington became increasingly frayed under Obama, but analysts said security cooperation and intelligence sharing remained solid.