By Drew Hinshaw and Joe Parkinson
LJUBLJANA, Slovenia -- A corporate jet from Tel Aviv touched down in this sleepy Alpine country on a freezing night last December, carrying two operatives from an Israeli intelligence company that critics have described as "the private Mossad."
The men rode in a chauffeured car to the headquarters of Slovenia's far-right populist opposition party, authorities say. Neighbors were suspicious of the men speaking a foreign language, and reported them to a local journalist and the police.
This month, Slovenia's intelligence department began reaching out to other European spy agencies to try to identify the visitors -- and piece together a mystery that has reverberations from Ukraine to Israel to the war in Iran.
According to Slovenian officials, the men were plotting to influence elections held Sunday by seeking to discredit the governing Freedom Movement party, which has vocally supported Palestinians and steadfastly backed Ukraine -- and oust it from power.
In the end, although the Freedom party had been projected to lose by most opinion surveys, it managed to barely edge out the far-right Slovenian Democratic Party. On Monday, Freedom politicians said they were confident they could form a government.
The results followed a campaign during which videos purporting to show figures close to the Freedom party were caught discussing ways to circumvent lobbying rules or misuse public funds.
The videos were organized, the government says, by December's visitors, who they identified through airport records as Giora Eiland, a former head of Israel's National Security Council, and Dan Zorella, a former Israeli military intelligence officer.
Eiland, a retired major general, is an adviser to Black Cube, an Israeli company famous for having conducted surveillance for clients including Harvey Weinstein and former Congolese President Joseph Kabila. Zorella is the firm's founder.
Black Cube didn't respond to requests for comment. Israel's foreign ministry also declined to comment.
Slovenia's government didn't say who it alleges hired Black Cube, though it said it believes the contract "originated in Slovenia."
Opposition leader Janez Jansa initially told reporters he wasn't aware of Black Cube. He later said he had met Eiland but couldn't recall when. He sent The Wall Street Journal a statement that read: "Further recordings are expected in the coming days." He didn't elaborate.
"A monument should be erected in the middle of Ljubljana to the company (agency or whatever it is) Black Cube," his party said in a statement.
The ruling party turned the campaign into a referendum on Black Cube and the underworld of spies-for-hire it came to symbolize. European governments rallied around Slovenia, decrying foreign interference.
Slovenia "has been the victim of clear interference, disinformation, and actions by third countries," French President Emmanuel Macron told reporters last week, after Slovenian Prime Minister Robert Golob complained about the alleged smear campaign to European leaders.
Picking sides
Slovenia's Freedom party has positioned itself at times as one of Europe's most out-front critics of Israel. In 2024, it angered Tel Aviv by recognizing a Palestinian state, helping set a precedent that Europe's larger powers have since followed.
The Slovenian opposition, by contrast, has vowed to unrecognize Palestine and move Slovenia's Israeli embassy to Jerusalem.
The opposition also wants to ally Slovenia with Hungary's nationalist prime minister, Viktor Orbán -- and, by extension, the Trump administration, which has expressed support for Europe's far right.
Jansa, the opposition leader who previously served three terms as prime minister, is a close friend of Orbán, a Trump ally who has blocked European capitals from using roughly $100 billion in Russian funds frozen in Europe to fund Ukraine's defense and reconstruction.
Orbán is due to meet with Vice President JD Vance this week ahead of an April election in Hungary, with polls too close to call. Orbán's 2018 victory was boosted by a Black Cube campaign, which secretly recorded opposition figures in audiotapes that were published by government-controlled newspapers, the Journal reported previously.
Slovenian officials said they worked with European partners to identify Black Cube operatives who they say participated in the alleged plot to influence its election. According to the Slovenians, the alleged Black Cube operatives wore disguises and posed as investors seeking to build data centers, and invited public figures close to the government to five-star hotels in Vienna, London and Zagreb, Croatia, from December to February.
Later, short video clips from those conversations showed up on a website that went live this month. They appeared to show the public figures discussing how to engage in influence peddling and other misconduct -- evidence, Slovenia's opposition said, of "corruption of unimaginable proportions."
France's state-run Viginum agency, which tracks foreign interference, helped review closed-circuit television footage, people familiar with the situation said.
Black ops
Black Cube first moved into the headlines in 2017 when an employee posed as a women's-rights activist to secretly record an actress on behalf of Hollywood producer Harvey Weinstein. The ruse was part of Weinstein's efforts to quash sexual-assault allegations, the Journal has reported.
Black Cube adopted tactics common in the spy trade, such as restricting information about projects to small teams, the Journal reported. Two members of its advisory board were former heads of Mossad, the Israeli government intelligence agency. Its operatives have also been publicly linked to efforts to gather dirt on Alexei Navalny, the Russian opposition leader killed in his Arctic jail in 2024, and a scheme to intimidate Romania's anticorruption chief.
In the Hungary case in 2018, nongovernmental organizations and individuals connected to American-Hungarian businessman George Soros were contacted by agents using false identities, invited to hotels across Europe and secretly recorded. The tapes were edited to wrongly imply he strongly supported mass refugee settlements.
Orbán repeatedly referenced the leaks in the last days before he claimed a landslide victory. The project was exposed as a Black Cube operation after two of the operatives were identified in photos and linked to the firm, the Journal has reported.
Slovenia spying
In Slovenia, the alleged Black Cube operation targeted roughly half a dozen people, officials say. One case began with a man named Daniel Hewitt, an independent recruiter who sent out a LinkedIn message saying clients based in London were exploring opportunities to finance data centers in the Balkans.
Reached by the Journal, Hewitt said he was unaware of any connections between his client, who paid for his services, and Black Cube. "This is really concerning, this is the first I've heard of this," he wrote the Journal, without naming the client. "I will cease all work with this contact."
Dominika varc Pipan, a former justice minister close to the current government who received the outreach, told the Journal she was initially suspicious, wondering why she had been chosen. She had resigned from government nearly two years earlier after her ministry purchased a government building at an elevated price, but had denied wrongdoing and never been indicted.
As she fired off basic diligence questions, the professional tone of the answers soothed her unease. By the end of January, she had agreed to a half-hour Zoom call with an investment fund calling itself Stockard Capital.
They seemed to know nothing about data centers, she thought. But she accepted an invitation to meet a week later at the Park Hyatt hotel in Vienna.
The two men waiting for her said they were Czech and American businessmen, but their accents seemed slightly odd, she said. She said she scanned the table for recording devices, but concluded they were clueless investors as they fumbled through basic questions about Slovenian politics.
Over the course of several meetings, including one at an upscale Austrian diner built into a 12th-century monastery, the men said they wanted to feel out the government's thinking. As she talked about Slovenia's government and her contacts within it, cameras were capturing her every word.
"What I really want to know," she remembers the Czech man repeatedly asking, "is what would the prime minister want to greenlight" the data centers.
varc Pipan said she felt like they were pushing her to suggest a bribe. As one meal ended, she noticed her hosts paid the tab of nearly 500 euros, equivalent to nearly $580, in cash.
On March 11, she woke up to seven missed calls from a friend, warning her that short videos of her had been posted online, under the title: "Dominika varc Pipan's Lobbying Activities." Minutes later, she noticed Stockard Capital's website was gone.
varc Pipan said she never agreed to lobby for them: She had been barred from registering as a lobbyist until early March, when she finished two full years out of office. She was only offering to gauge the state's interest in the proposal and provide ordinary business advice, she said.
On Wednesday, she said she woke up to find the exhaust pipe of her car glued shut with polyurethane. Slovenia's police are investigating.
Write to Drew Hinshaw at drew.hinshaw@wsj.com and Joe Parkinson at joe.parkinson@wsj.com
(END) Dow Jones Newswires
March 23, 2026 14:02 ET (18:02 GMT)
Copyright (c) 2026 Dow Jones & Company, Inc.
Comments