About 16,000 foreign volunteers from at least 72 countries serve in Ukraine's Defense Forces, Military Ombudsman Olha Reshetylova said. Reshetylova said nearly 40% are citizens of Latin American countries.

The figures show the scale of foreign volunteers' participation in Ukraine's military as Russia's invasion strains Ukraine's manpower. Reshetylova's office monitors their rights and uses complaints to identify recurring problems.

Reshetylova announced the figures during a 4 August meeting of the heads of Ukraine's foreign diplomatic missions.

"Ukraine values [foreign service members'] contribution and understands their responsibility to uphold their rights," she said.

Since 27 January 2026, her office has received more than 300 requests from foreign service members, their relatives, and authorized representatives—requests concerning pay, benefits, supplies, combatant status, medical care, and early contract termination. The office has proposed legal changes in response.

Reshetylova did not explain how the figure of 16,000 was calculated. In February 2026, a Ukrainian Ground Forces official said that more than 10,000 foreigners had served or were serving in Ground Forces units.

That cumulative figure covered a narrower part of Ukraine's Defense Forces and is not directly comparable with Reshetylova's estimate.

Foreign recruits bring combat experience and specialist skills

The International Legion, the main destination of most foreign volunteers, draws members from more than 50 countries. Its members include veterans of the war against ISIS, career soldiers, medics, and newcomers motivated by duty, adventure, experience, or personal loss. 

On the front line, Colombian veterans have played a significant role in aiding Ukrainian forces in Zaporizhzhia Oblast, bringing military and police experience gained fighting drug cartels and rebels in Colombia.

Some foreign service members also contribute specialist skills beyond infantry combat. British bomb-disposal expert Christopher "Swampy" Garrett cleared mines and trained more than 2,000 Ukrainian troops, police officers, and international volunteers.

Garrett was killed on 6 May 2025 while dismantling a Russian explosive device in Izium. 

Contracts, captivity, and the human cost

Beyond the battlefield, foreign service members can face contract disputes in Ukraine, prosecution at home, or imprisonment by Russia.

Finnish volunteer Leo Åland struggled to end his six-month contract. He was killed in combat after serving in Ukraine's military for just over four months.

In December 2025, a Swiss court convicted Avi M. of serving in Ukraine's military. Swiss law prohibits citizens from joining foreign armed forces.

Russia has prosecuted captured foreign members of Ukraine's military as mercenaries rather than treating them as prisoners of war. A Russian court sentenced British fighter James Scott Rees Anderson to 19 years following his capture in Kursk Oblast.

Argentina has uncovered a Russian intelligence operation working to spread pro-Kremlin disinformation and influence public opinion, Argentine presidential spokesperson Manuel Adorni announced on June 18, citing the country's intelligence, according to AFP and Infobae.

The La Compania network, which is allegedly linked to the Russian government and the Kremlin's Project Lakhta, was led by Russian nationals Lev Konstantinovich Andriashvili and his wife Irina Yakovenko, who are both residents of Argentina, according to authorities.

The U.S. Treasury Department has previously accused the Project Lakhta, reportedly formerly overseen by late Russian oligarch Yevgeny Prigozhin, of election interference in the United States and Europe.

Prigozhin led the Russian Wagner mercenary group that was deployed in some of the deadliest battles in Ukraine, like the siege of Bakhmut. The oligarch was killed in a plane crash under suspicious circumstances in August 2023, around two months after leading a brief armed rebellion against the Kremlin.

Andriashvili and Yakovenko are accused of receiving financial support to recruit local collaborators and run influence operations aimed at advancing Moscow's geopolitical interests.

Their objective was to "form a group loyal to Russian interests" to develop disinformation campaigns targeting the Argentine state, Adorni said at a press briefing.

The spokesperson added that the alleged operation included producing social media content, influencing NGOs and civil society groups, organizing focus groups with Argentine citizens, and gathering political intelligence.

"Argentina will not be subjected to the influence of any foreign power," Adorni said, noting that while some findings have been declassified, much of the investigation remains a state secret.

Since Russia's full-scale invasion of Ukraine in February 2022, there has been a significant uptick in Russian migration to Argentina, some of which officials fear could be linked to covert intelligence operations.

Authorities reportedly said these espionage activities are often facilitated by a 2009 bilateral agreement between Argentina and Russia allowing visa-free travel, a deal that remains in effect despite growing security concerns.

In response to the threat, Adorni announced the creation of a new Federal Investigations Department (DFI) within Argentina's Federal Police, modeled in part on the U.S. FBI. The agency will focus on countering organized crime, terrorism, and foreign espionage, with investigators trained in advanced techniques and bolstered by experts in law, psychology, and computer science.

’100 days of Russian manipulations’ — Ukraine blasts Moscow over disregarding US ceasefire effort

A hundred days since the U.S. and Ukraine agreed on a ceasefire, “Russia continues to choose war,” Foreign Minister Andrii Sybiha said on June 19, urging international pressure to push Moscow toward peace.

The Kyiv IndependentMartin Fornusek