A flag is flown during a protest in support of Palestinians in Gaza, amid the ongoing conflict between Israel and Hamas, outside the European Parliament, in Strasbourg, France, Nov. 27, 2024. Photo: REUTERS/Yves Herman

Israel has issued a travel warning ahead of the upcoming Jewish high holidays and the second anniversary of the Oct. 7, 2023, atrocities, alerting citizens of heightened terrorist threats against Israelis and Jewish communities abroad.

On Sunday, the National Security Council (NSC) urged travelers to stay alert, cautioning that the two-year anniversary of the Hamas-led invasion of and massacre across southern Israel could trigger attacks by Iran-backed or Hamas-linked terrorist groups targeting Jews and Israelis abroad.

“The recent period has been characterized by continued efforts to carry out terrorist attacks against Israeli and Jewish targets by the various terrorist organizations (most of them led by Iran and Hamas),” the NSC said in a statement.

“Oct. 7 may again serve as a significant date for terrorist organizations,” the statement read.

Israeli officials warned that the threat mainly stems from Iran and its terrorist proxies, which have increasingly targeted Jews and Israelis beyond Israel’s borders.

In recent months, the NSC reported that dozens of plots have been thwarted, even as violent incidents — including physical attacks, antisemitic threats, and online incitement — have continued to rise.

“With the war ongoing and the terror threat growing, we are witnessing an escalation in antisemitic violence and provocations by anti-Israel elements,” the NSC said in its statement.

“This trend may inspire extremists to carry out attacks against Israelis or Jews abroad,” it continued.

According to the NSC, Iran remains the leading source of terrorism against Israelis and Jews worldwide, acting both directly and through proxies such as Hamas and Hezbollah.

“Iranian motivation is growing in light of the severe blows it suffered in the framework of ‘Operation Rising Lion’ and the growing desire for revenge,” the NSC said in a statement, referring to the 12-day war with Israel in June.

Amid rising tensions over the war in Gaza, Israeli officials have previously warned of Iranian sleeper cells — covert operatives or terrorists embedded in rival countries who remain dormant until they receive orders to act and carry out attacks.

In light of this reality, the NSC also warned that social media posts revealing ties to Israeli security services could put individuals at risk of being targeted.

“We advise against posting any content that suggests involvement in the security services or operational activities, including real-time location updates,” the statement read.

This latest updated warning comes amid a growing hostile environment and a shocking surge in anti-Jewish hate crimes targeting Jews and Israelis worldwide.

Across Europe, Israelis are facing a disturbing surge of targeted attacks and hostility, as a wave of antisemitic incidents — from violent assaults and vandalism to protests and legal actions — spreads amid rising tensions following recent conflicts in the Middle East.

On Saturday, a 29-year-old Israeli and his sister were attacked by three Palestinian men while on vacation in Athens, Greece.

According to local media reports, the two siblings were walking through the city’s center when three unknown individuals carrying Palestinian flags approached them, shouting antisemitic slurs.

The attackers assaulted the Israeli man, a disabled Israel Defense Forces (IDF) veteran, scratching him, throwing him to the ground, and striking him with their flagpoles, while his sister attempted to intervene and protect him.

October 7 is a global war against Jews & Israelis.

Pro-Palestinian radicals just attacked an Israeli man in Syntagma Square, Athens. via @N12News https://t.co/IZR2IdNrUI pic.twitter.com/9S2o4IjtO6

— Eylon Levy (@EylonALevy) September 14, 2025

Greek authorities arrested all five individuals involved in the incident. According to the Israeli man’s father, his son was placed in a cell with 10 Arabs, where he was reportedly beaten again and feared for his life.

In a separate antisemitic incident earlier this year, a group of Israeli teenagers was physically assaulted by dozens of pro-Palestinian assailants — some reportedly armed with knives — on the Greek island of Rhodes.

After leaving a nightclub, the teens were followed to their hotel, where they were violently assaulted, leaving several with minor injuries.

In another example of rising anti-Israel sentiment and hostility toward Jewish communities, one of Britain’s most prestigious military academies, the Royal College of Defense Studies, announced Sunday that it will bar Israeli students from enrolling next year, citing concerns over the war in Gaza.

In Belgium, two IDF soldiers attending the Tomorrowland music festival were arrested and interrogated by local authorities following a complaint from the Hind Rajab Foundation (HRF), an anti-Israel legal group that pursues legal action against IDF personnel, accusing them of involvement in war crimes.

According to HRF, the soldiers were seen waving the flags of the IDF’s Givati Brigade, which they claimed has been “involved in the systematic destruction of civilian infrastructure in Gaza and in carrying out mass atrocities against the Palestinian population.”

In France, a 34-year-old Algerian man was sentenced to 40 months in prison for threatening passengers with a knife and making antisemitic death threats after boarding a train at Cannes station.

In another incident earlier this year, a Jewish man wearing a kippah was brutally attacked and called a “dirty Jew” in Anduze, a small town in southern France.

Dr. Ellen Kriesels at an anti-Israel rally. Photo: Screenshot

In London, an investigation has started into a doctor after the family of a disabled Jewish boy uncovered her long trail of antisemitic social media writings, another expression of an ongoing trend of antisemitic bigotry manifesting in medical settings.

Dr. Ellen Kriesels works as a consultant pediatrician at Whittington Health NHS Trust and serves as clinical lead for community pediatrics. She has been suspended pending a formal inquiry, according to British media reports. The family — who remains unnamed — cares for a son who lives with cerebral palsy and multiple other conditions. Members of the boy’s family told The Times they were “horrified” that a physician treating him had publicly claimed that “virtually every Jew has some feelings of supremacy” and that “world Jewry” was complicit in “slaughtering Palestinians.”

An example of the online postings of Dr. Ellen Kriesels, a consultant pediatrician at Whittington Health NHS Trust. Photo: Screenshot

Kriesels attended an anti-Israel rally in London on Sept. 6 carrying a placard that paired the Star of David with words such as “rape,” “steal,” and “kill.” On her X account she alleged that Israel’s actions in Gaza proved Jews “slaughter Palestinians precisely because they are not Jewish,” while writing that one should understand the Hamas terrorists killed during the Oct. 7, 2023, massacre across southern Israel as “oppressed resistance fighters.”

The boy’s parents had already grown apprehensive after confronting Kriesels about her choice to wear a pro-Palestinian lanyard during an appointment. They filed a fresh complaint when they discovered she had failed to refer their son for specialist treatment as part of his transition to adult care. They argued the lapse, coupled with her public antisemitism, raised urgent questions about the safety of the patients under her care.

The child’s father identified himself as “Brian” but chose not to reveal his last name to The Times.

“I am horrified that according to the logic of this doctor, set out in public statements, that because my paraplegic, non-verbal son is brought up in a Jewish household that he harbors genocidal intentions and believes himself superior,” he said. “This is factually impossible and profoundly discriminatory. A professional who publicly expresses such views cannot be regarded as safe to work with vulnerable children or adults. It is deeply concerning that she was permitted to be involved in my son’s care.”

Whittington Health apologized to the family, saying the doctor was not currently scheduled to work, while the General Medical Council confirmed it had started to review the case. “Antisemitism has no place in health care,” a spokesperson said. Britain’s health department also condemned the remarks, promising zero tolerance for hate inside the National Health Service.

The United Kingdom has seen similar controversies around antisemitism’s invasions into health-care settings.

At University College London Hospitals (UCLH), posters appeared on walls with the claim that “Zionism is poison” and the accusation that the Jewish state had been “slaughtering children in Gaza.” The hospital apologized and promised it would crack down on enforcing policies intended to prevent the promotion of political ideologies to patients.

Another high-profile case involved midwife Fatimah Mohamied, who resigned from Chelsea and Westminster Hospital after UK Lawyers for Israel exposed a series of anti-Israel posts — including an Oct. 8, 2023, message celebrating “Palestinians’ right to resist” the day after the most lethal day for the Jewish people since the end of the Holocaust. Mohamied has since filed a lawsuit claiming her supervisors illegally suppressed her pro-advocacy.

The antisemitic incidents in the UK’s hospitals parallel those in other countries.

In the Netherlands, police investigated a nurse accused of threatening to administer lethal injections to Israeli patients.

In Australia, two nurses filmed themselves bragging online about refusing to treat Israelis, making throat-slitting gestures, and boasting of killing Jews. Both lost their licenses and now face criminal charges.

In Belgium, a hospital suspended one of its physicians after discovering antisemitic cartoons on his social media accounts. The posts included a cartoon showing several babies decapitated by the tip of a Star of David, along with an AI-generated image portraying Hasidic Jews as vampires poised to devour a sleeping baby. The doctor came under fire after he recently diagnosed a nine-year-old patient by listing “Jewish (Israeli)” as one of her medical problems on his report.

A December survey by the Jewish civil rights group StandWithUs found 40 percent of Jewish health-care professionals in the US had faced antisemitism at work; in Canada, the number reached 80 percent.

Kriesels’ decision to showcase her antisemitic ideology on X aligns with a notable cohort of users who feel compelled to broadcast their bigotry on the social media platform owned by billionaire Elon Musk, who currently reigns as the world’s wealthiest man.

A recent study by the Combat Antisemitism Movement shows the scale of the problem: in a random 10-minute window surveying X on Sept. 6, analysts found that 82 percent of posts using the word “Jew” promoted antisemitism.

Candidate Zohran Mamdani speaks during a Democratic New York City mayoral primary debate, June 4, 2025, in New York, US. Photo: Yuki Iwamura/Pool via REUTERS

New York Gov. Kathy Hochul (D) is facing sharp criticism after endorsing far-left state Assemblymember Zohran Mamdani for mayor of New York City, with some US lawmakers describing the Democrat from Queens known for his fierce criticism of Israel as a “communist” and antisemitic.

Amid mounting pressure from progressive Democrats, Hochul endorsed Mamdani’s mayoral campaign in a New York Times op-ed on Sunday. The governor cited Mamdani’s emphasis on “public safety and making “New York City affordable.”

“We discussed the need to combat the rise of antisemitism urgently and unequivocally,” Hochul wrote. “I’ve been glad to see him meet with Jewish leaders across the city, listening and addressing their concerns directly.”

In the immediate aftermath of the endorsement, Hochul faced a withering denunciation from US Rep. Elise Stefanik (R-NY), who argued that the governor now supports a “raging antisemite communist.” She asserted that Hochul now “owns” Mamdani’s left-wing positions to “defund the police, abolish our law enforcement, abolish prisons, abolish private health-care insurance.”

Stefanik also accused Hochul of lending credibility to Mamdani’s “antisemitism, which put New York at risk and is a danger to the Jewish community in New York City.”

Stefanik, who serves on the House Republican leadership, is widely expected to run for governor of New York in 2026. Though a recent Sienna College poll shows Hochul maintaining a formidable lead over Stefanik, the margin has decreased from 23 points in June to 14 points in August.  

US President Donald Trump also ripped into Hochul for endorsing Mamdani.

“Governor Kathy Hochul of New York has endorsed the ‘Liddle Communist,’ Zohran Mamdani, running for Mayor of New York,” Trump said in a post on Truth Social. “This is a rather shocking development, and a very bad one for New York City. How can such a thing happen? Washington will be watching this situation very closely. No reason to be sending good money after bad!”

US Rep. Mike Lawler (R-NY) also chimed in, calling Hochul’s endorsement of Mamdani “a complete and total disaster for our state and for the country.”

In previous elections, Hochul has enjoyed robust support from Jewish communities in Crown Heights, Borough Park, and the Five Towns. Some observers have speculated that her embrace of Mamdani threatens to fracture her base of support among Jewish voters. 

A little-known politician before this year’s Democratic primary campaign, Mamdani is an outspoken supporter of the boycott, divestment, and sanctions (BDS) movement, which seeks to isolate Israel from the international community as a step toward its eventual elimination.

Mamdani has also repeatedly refused to recognize Israel’s right to exist as a Jewish state, falsely suggesting the country does not offer “equal rights” for all its citizens, and promised to arrest Israeli Prime Minister Benjamin Netanyahu if he visits New York.

Mamdani also initially defended the phrase “globalize the intifada” — which references previous periods of sustained Palestinian terrorism against Jews and Israels and has been widely interpreted as a call to expand political violence — by invoking the Warsaw Ghetto Uprising during World War II. However, Mamdani has since backpedaled on his support for the phrase, saying that he would discourage his supporters from using the slogan.