Saudi Arabia has expressed “great concern” and warned of “serious unintended consequences”, following the US Congress’s decision to overrule President Obama and push through a law allowing legal action against the kingdom over the September 11 attacks.
Some analysts have speculated that Riyadh could retaliate by curbing trade with the US or restricting cooperation on security, a crucial relationship for US efforts in Arab conflicts.
The Saudi riyal fell against the US dollar in the forward foreign exchange market on Thursday after the bill was passed, prompting a drop in dollar demand in Riyadh.
The law grants an exception to the legal principle of sovereign immunity in cases of “terrorism” on US soil, clearing the way for lawsuits by the families of victims of the attacks seeking damages from the Saudi government.
Riyadh denies longstanding suspicions that it backed the hijackers who attacked the United States in 2001. Fifteen of the 19 hijackers were Saudi nationals.