Saudi Arabia has accused Iran of seeking international influence through "murder and mayhem," after the U.S. revealed an alleged plot by elements of the Iranian government to assassinate the Saudi Arabian ambassador to Washington.
Saudi Foreign Minister Prince Saud al-Faisal said Thursday while on a trip to Austria that Saudi Arabia is working on a "measured response." He said his country would "not bow" to Iranian pressure and would hold Tehran accountable for any action taken against Saudi Arabia.
Meanwhile, Prince al-Faisal's British counterpart, William Hague, said Thursday the alleged plot was a "major escalation in Iran's sponsorship of terrorism." He said Britain will work with the U.S., the European Union and Saudi Arabia to agree on an international reaction.
Iran has denied the allegations. The state-run IRNA news agency quoted Deputy Foreign Minister Ali Ahani Wednesday as calling the scenario "absurd" and urging Saudi Arabia to be wary of U.S. efforts to damage relations of countries in the region.
The U.S. and Saudi Arabia pledged to pursue a "strong and unified" international response to the alleged plot.
The White House said President Barack Obama and Saudi King Abdullah spoke by telephone Wednesday and agreed that the plot represents a "flagrant violation" of international norms and vowed to hold "those responsible accountable for their actions."
U.S. Secretary of State Hillary Clinton called the thwarted scheme a "dangerous escalation" in Iran's "long-standing use of political violence and sponsorship of terrorism." She said the U.S. will work closely with its international partners "to increase Iran's isolation and the pressure on its government."
The tough response came a day after the U.S. Justice Department announced it had charged Manssor Arbabsiar, a naturalized U.S. citizen, and Gholam Shakuri, a member of an elite Iranian military unit, with conspiring to carry out a bomb attack on Saudi envoy Adel al-Jubeir.
U.S. Attorney General Eric Holder said the plot was "conceived, sponsored and directed" from Iran.
White House spokesman Jay Carney said the plot involved top members of the Iranian Revolutionary Guard's Quds Force, a group that operates outside of Iran. He called that finding "significant in and of itself," and said Washington is taking "no options off the table" in its response to the alleged scheme.
Meanwhile, the U.S. designated the Iranian commercial airline Mahan Air a supporter of terrorist-related activities in Tehran. The finding prohibits U.S. citizens from engaging in commercial or financial transactions with Mahan Air and freezes assets it may hold under U.S. jurisdiction.
U.S. Vice President Joe Biden called the alleged assassination attempt an "outrageous act" for which Iran must be held accountable.
The U.S. State Department has issued a worldwide alert for American citizens about possible "anti-U.S. actions" following charges against the two Iranians. It said the scheme may indicate Iran's government could be taking a "more aggressive focus" on terrorist activity.
U.S. officials say Arbabsiar unknowingly hired an informant of the U.S. Drug Enforcement Administration to carry out the plot, believing the informant had ties to Mexican drug cartels capable of killing the Saudi ambassador. They say Arbabsiar confessed to making a $100,000 down payment on the scheme with a price tag of $1.5 million.
Officials arrested Arbabsiar at New York's John F. Kennedy International Airport on September 29, but Shakuri is still at large.
Some information for this report was provided by AP, AFP and Reuters.