A poster issued jointly by the Department of Homeland Security, the Jewish Federations of North America, and the Secure Community Network urges synagogue goers to be on the alert for anything that looks suspicious or out of the ordinary.

WASHINGTON – When America’s top intelligence official said that Iran’s regime is considering attacks on U.S. soil, he cited a single incident and qualified the assessment with a “probably.”

Intelligence and law enforcement experts, however, say that the Jan. 31 warning by the director of national intelligence, James Clapper, was likely based on more than the evidence he cited.

“I would be surprised to learn a statement like that was not backed up by intelligence,” said Mark Dubowitz, executive director of the Foundation for Defense of Democracies.

The question of whether Iran will respond to escalating international pressure over its nuclear program with terrorist attacks on overseas targets is of particular concern to Jewish communities around the world.

While there has been intense speculation over how Iran would respond to a possible Israeli or U.S. military strike against its nuclear facilities, experts already are citing with concern a series of recent foiled plots, allegedly connected to Iran, or such of its proxies as the Lebanese-backed Hezbollah militia, against Jewish and non-Jewish targets.

In his written unclassified testimony submitted to the U.S. Senate’s Select Committee on Intelligence, Clapper cited only the alleged plot revealed in October to assassinate Saudi ambassador Adel Al-Jubeir at the Cafe Milano, a popular Georgetown hangout for the powerful and influential. The attack allegedly had the backing of the Iranian Revolutionary Guard Corps.

“The 2011 plot to assassinate the Saudi ambassador to the United States shows that some Iranian officials — probably including Supreme Leader Ayatollah Ali Khamenei — have changed their calculus and are now more willing to conduct an attack in the United States in response to real or perceived U.S. actions that threaten the regime,” Clapper wrote.

Matthew Levitt, a former deputy assistant secretary for intelligence and analysis at the Treasury Department under George W. Bush, said Clapper’s inclusion of Khamenei in his warning, even with the “probably” qualification, was no accident.

“People are careful to say what they mean, and nothing more,” he said of the intelligence community. “As soon as I read that, I said, ‘Uh-oh, that’s not just a statement to say the threat to the ambassador was real. [Khamenei] was in there to say it went to the top.”

Sources close to law enforcement say there is no specific threat of an attack, although the FBI and the Department of Homeland Security in recent weeks have intensified their monitoring of possible threats.

On Feb. 3, ABC News cited an Israeli internal security document in reporting that Jewish and Israeli institutions in the Unites States are on high alert over concerns that they will be targeted by Iran or a proxy. According to ABC, the head of security for the Israeli consul general for the Mid-Atlantic states wrote in a letter that the security threat has increased on “guarded sites,” such as Israeli embassies and consulates, and such “soft sites” as synagogues, Jewish schools, kosher restaurants, and Jewish community centers.

ABC also reported that local and regional law enforcement and intelligence officials in U.S. and Canadian cities — including New York, Los Angeles, Philadelphia and Toronto — have increased security at Israeli and Jewish institutions, and that federal officials also have increased vigilance in looking for imminent attacks.

“In the past few weeks, there has been an escalation in threats against Israeli and Jewish targets around the world,” ABC quoted a U.S. regional intelligence document as saying. “Open source has reported many demonstrations against Israel are expected to be concentrated on Israeli embassies and consulates. Such demonstrations have occurred internationally, as well as domestically. These demonstrations could potentially turn violent at local synagogues, restaurants, the Israeli embassy, and other Israeli sites.”

The document added, “Law enforcement should be vigilant when making periodic checks at all Jewish facilities.”

An Israeli intelligence report warned that forged Israeli passports might be used by potential terrorists to leave the Middle East and enter the United States and Canada.

As the tensions over Iran’s nuclear program mounted, Jewish security professionals noted the possible threat to Jewish institutions around the world.

A number of disrupted plots overseas in recent weeks have raised concerns, said Paul Goldenberg, national director of the Secure Community Network, an effort funded by the Jewish Federations of North America (JFNA) that works on strengthening security for Jewish institutions.

“The people that want to come after Israel overseas will look at Jewish targets in the host nations, as well,” he said. “They will look not just at embassies, but at synagogues and JCCs as secondary targets.”

An example cited by Goldenberg of the conflation of Jewish and Israeli targets was the late January arrests of at least two Azerbaijani citizens in connection with an alleged plot to kill two rabbis and the Israeli ambassador in the capital city, Baku. A third man reportedly also was charged, but remains at large.

Azerbaijan’s national security ministry accused Iranian intelligence agents of arming and equipping the three men, the Israeli daily newspaper Haaretz reported. Haaretz suggested the plot was intended as retaliation for the assassinations of Iranian nuclear scientists. Israel’s Counter-Terrorism Bureau has issued a travel warning for Azerbaijan.

In addition to the Baku attacks, Israeli officials alerted authorities in Thailand to a potential attack and, on Jan. 13, a Lebanese man was arrested for allegedly planning a bombing attack against Israelis and Jews.

Levitt, who is now a senior fellow at the Washington Institute for Near East Policy, said there was a period in which Iran was reluctant to strike out against targets overseas.

Iran was implicated in the 1994 bombing of the AMIA Jewish community center in Buenos Aires that killed 85 people and wounded hundreds. An Argentine prosecutor eventually accused five Iranians and the operational chief of the Lebanese Shiite militia Hezbollah, Imad Mughniyah, of involvement in the attack. Interpol issued warrants for their arrests in 2007.

Iran, which has always denied involvement in the AMIA attack, was stung by the diplomatic backlash in its wake, and it is widely believed to have ordered its proxies to confine operations to the Middle East.

The trigger that renewed the threat of overseas attacks was the assassination of Mughniyah by a car bomb in Syria in 2008. Hezbollah blames Israel’s Mossad for the assassination, Levitt said.

“We will pick the time, the place, the punishment, the means, and the method,” Hezbollah chief Sheikh Hassan Nasrallah said at the time.

Jewish communities in the United States and overseas have issued security alerts each year since then on the Feb. 12 anniversary of the killing.

Levitt said the intensification of Iran’s isolation as the result of sanctions targeting its suspected nuclear weapons program and the heightened U.S. military posture have likely contributed to the intelligence community’s sense that more attempts on overseas targets may be imminent.

“We’re at a point where Iran, when pushed into a corner and we’re finally doing things that have an impact on the nuclear program, the likelihood it lashes out increases,” he said.

Another factor that has spurred Iranian threats of retribution is the spate of assassinations of Iranian nuclear scientists.

“From now on, in any place, if any nation or any group confronts the Zionist regime, we will endorse and we will help,” Khamenei said Feb. 3 in a Friday sermon translated by the Associated Press. “We have no fear expressing this.”

Dubowitz said such statements merited heightened alert.

“The overall question of what other aggressive actions the Iranians are willing to take in response to our pressure means Jewish institutions in the United States need to take reasonable precautions,” he said.

JTA Wire Service