Austria has ordered four Russian diplomats to leave the country over suspected espionage, declaring them persona non grata following findings by Austrian security authorities, Austrian media outlet Heute reported on 23 October.

The expulsions come as European countries step up efforts to counter suspected Russian intelligence operations amid Moscow’s war against Ukraine. Three of the diplomats worked at the Russian Embassy in Vienna, while the fourth served in Russia’s delegation to the Organization for Security and Co-operation in Europe (OSCE), which is headquartered in Vienna. 

Austria’s Foreign Ministry said the four had engaged in “activities incompatible with their diplomatic status,” a term usually used for spying, Reuters reported. It did not disclose details of the alleged activities or the intelligence findings behind the decision.

The three embassy diplomats were declared persona non grata under Article 9 of the Vienna Convention on Diplomatic Relations. The fourth, who worked on military security and arms control at Russia’s OSCE delegation, was also ordered to leave Austria. 

Vienna remains a hub for Russian intelligence

The latest expulsions bring the number of Russian diplomats Austria has expelled since 2020 to 18, according to Reuters. In May 2026, Austria expelled three Russian Embassy employees suspected of using antennas on diplomatic buildings to intercept satellite internet data transmitted by international organizations based in Vienna. 

Vienna’s concentration of international organizations, including the OSCE and United Nations agencies, has made it a key location for intelligence activity. A 2024 report by The Wall Street Journal, described Vienna as a major Russian spy hub for operations targeting Western countries, including surveillance of arms supplies to Ukraine.

Russia’s Deputy Foreign Minister Dmitry Lyubinsky said Moscow’s response to the expulsions was unavoidable, according to Russian state news agency TASS, AP reported.

Russian hostile activity costs the UK at least £2 billion (US$2.7 billion) annually, according to a recent report by Scottish MP Graeme Downie, who has called on the government to measure what these actions cost Britain. But this figure is just the baseline. In reality, a profound shift in Moscow’s approach to sabotage means the […]

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Three members of the Russian Embassy, as well as a Russian delegate at the OSCE responsible for military security and arms control, "carried out activities incompatible with their diplomatic status," Austria's Foreign Ministry said.

“The ‘job’ … has been mostly accomplished,” said a senior official in Belgium’s spy service, Hugues Brulin, in a WhatsApp message to the Belgian then EU commissioner, Didier Reynders.

“Bravo for the work you did,” said Reynders.

It was back in 2022, and, at least on the surface, they were chatting about a staff reshuffle inside Belgium’s intelligence service, La Sûreté de l’Etat/Veiligheid van de Staat (VSSE) — which was already a peculiar thing for Brulin to be doing on WhatsApp with an EU official.

But their messages, seen by EUobserver and published in full below, were now also evidence in a Belgian police investigation into Reynders on money-laundering charges, which painted them in the light of a potentially criminal conspiracy.

They reconfirmed that Belgian authorities were looking into wider allegations of Reynders’ possible collusion with Russia.

Brulin’s real “job” had been to stop the VSSE from probing Reynders and his potential Russia links, according to five former and current Belgian intelligence officers who spoke to EUobserver.

And Brulin also WhatsApp-ed Reynders on how to “counterattack” a Russia whistleblower.

The 68-year-old liberal politician from Liège, in French-speaking southern Belgium, had had a glittering career before his sudden fall from grace in December 2024, when Belgian police raided his properties, and before he was subsequently charged in 2025 with having laundered some €1m via the ING Bank, using lottery tickets and cash deposits.

Reynders had been EU justice commissioner from 2019 until 30 November 2024 (just four days prior to the police raid) and Belgium’s foreign and defence minister from 2011 to 2019.

And Belgium had vetted and cleared him to read “top secret” national, EU, and Nato documents.

Meanwhile, Europe was scandalised to learn, on 10 October, that Germany’s former spy chief had been arrested for selling secrets.

But if a man with Reynders’ CV was also found guilty of corruption and foreign collusion, it would be yet another security fiasco for Western allies.

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