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Lithuania warned in 2019 that Hungary posed NATO and EU leak risk, Poland says

Published by Global Banking & Finance Review

Posted on March 24, 2026

3 min read

· Last updated: April 1, 2026

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Lithuania warned in 2019 that Hungary posed NATO and EU leak risk, Poland says
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By Barbara Erling WARSAW, March 24 (Reuters) - Lithuania warned years ago that Hungarian officials posed a security risk within NATO, Polish Prime Minister Donald Tusk said on Tuesday, after a report

Lithuania Warned of Hungary's NATO, EU Leak Risks as Early as 2019, Says Poland

Concerns Over Security Risks and Information Leaks Within NATO and EU

By Barbara Erling

Background on Hungary's Relations with Russia

WARSAW, March 24 (Reuters) - Lithuania warned years ago that Hungarian officials posed a security risk within NATO, Polish Prime Minister Donald Tusk said on Tuesday, after a report that confidential information was being passed to Russia. 

 Hungary has maintained warm ties with Russian President Vladimir Putin's government despite the Ukraine war, often dissenting from the EU's pro-Kyiv policies. 

Allegations and Early Warnings

Information Leaks and NATO Concerns

Poland's Tusk said information had come "from various places for a long time" about leaks to Moscow from closed‑door meetings of the European bloc and suspicions that information from the trans‑Atlantic military alliance was also being passed on.

"As early as 2019 ... Lithuania ... requested the exclusion of the Hungarian delegation from a NATO meeting, stating that there were suspicions that the Hungarian delegation would pass on information of the highest confidentiality to Moscow," Tusk told reporters before a government meeting.

Washington Post Report and Hungarian Response

According to the Washington Post at the weekend, Hungarian Foreign Minister Peter Szijjarto had briefed his Russian counterpart Sergei Lavrov during breaks at EU meetings.

Szijjarto initially dismissed that as "fake news".

But in a video posted on X by a government spokesperson on Tuesday, he acknowledged that he consulted with non-EU countries before or after meetings of the bloc's foreign ministers, including the Russians, Americans, Turks and Israelis, adding that this was "perfectly natural".

Official Reactions

Lithuania's foreign ministry and a Hungarian government spokesperson did not immediately respond to a request for comment after Tusk's remarks.

"We don't comment on individual remarks by Allied officials," added a NATO official. 

'Guesses', Says Lithuania

Recent Concerns and Summit Exclusions

Lithuanian Foreign Minister Gabrielius Landsbergis, speaking on Monday to the national broadcaster, said that in 2024 a NATO member state raised similar concerns - which he described as "guesses" - that Hungarian representatives were passing information from alliance meetings to Moscow. 

"When we were preparing for the 2023 Vilnius summit, in the meetings we tried to not include Hungarian representatives, especially those where sensitive questions were discussed," he added, referring to a NATO summit.

Ambassador's Statement

Vytautas Leskevicius, Lithuania's ambassador to NATO between 2015-2020, told Reuters he had no recollection of Hungary's exclusion being sought as Tusk said.  

Moscow's Response and Further Controversy

Moscow has not commented on the furore, although it frequently accuses the West of smearing it with false accusations.

Adding to the controversy, Hungarian Prime Minister Viktor Orban has ordered a probe into what he called wiretapping of his foreign minister. 

Further Reporting

In its report, the Washington Post cited an unidentified European security official as saying Szijjarto used to call Lavrov regularly with "live reports" of EU meetings. 

(Reporting by Barbara Erling, Pawel Florkiewicz, Alan Charlish, Andrius Sytas)

Key Takeaways

  • Lithuania in 2019 requested exclusion of the Hungarian delegation from a NATO meeting over concerns of leaking highly classified information to Moscow
  • In 2024, similar suspicions resurfaced during preparations for the 2023 Vilnius summit, though Lithuanian officials later downplayed them as “guesses”
  • The Washington Post reported that Hungarian Foreign Minister Péter Szijjártó allegedly briefed Russian counterpart Lavrov on EU foreign ministers’ discussions, which he initially denied but later admitted to informal consultations

References

Frequently Asked Questions

What warning did Lithuania give about Hungary in 2019?
Lithuania warned that Hungarian officials posed a security risk within NATO due to suspicions of leaking confidential information to Russia.
What information allegedly was leaked from Hungary to Russia?
There were allegations that confidential information from EU and NATO meetings was passed from Hungarian officials to Russia.
How did Hungarian officials respond to the leak accusations?
Hungarian Foreign Minister Peter Szijjarto initially dismissed the claims as 'fake news' but later admitted consulting non-EU countries, including Russia.
Has NATO or the EU commented on the Hungarian leak allegations?
NATO stated they do not comment on individual remarks by Allied officials, and EU officials did not immediately respond.
What has Hungary's relationship been like with Russia amid these allegations?
Hungary has maintained warm ties with Russia, often dissenting from the EU's pro-Kyiv policies despite the Ukraine conflict.

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