Russia has released elderly American Stephen Hubbard after holding him behind bars for years on disputed mercenary charges linked to the war in Ukraine, international media reported on Tuesday.

The 72-year-old Michigan native, who had lived in Ukraine for roughly a decade before being captured by Russian troops, was granted his freedom following prolonged diplomatic manoeuvring between Washington and Moscow. Al Jazeera reported that Mr Hubbard’s release concludes a gruelling ordeal that saw the pensioner swept into the Kremlin's judicial apparatus as geopolitical relations reached their lowest ebb since the Cold War.

A quiet life upended in eastern Ukraine

Mr Hubbard had relocated to Ukraine in 2014, settling into a modest life in the north-eastern town of Izyum. Friends and family members have previously described him as a quiet retiree teaching English, far removed from the frontline combat operations into which Russian authorities later alleged he was drawn.

His detention occurred shortly after Russian forces invaded Ukraine in early 2022 and rapidly overran Izyum. While thousands fled westwards, Mr Hubbard was trapped behind enemy lines and seized by occupying soldiers. Months of uncertainty followed for his family in the United States, who received scant information regarding his welfare, whereabouts or legal status until state television footage surfaced showing him in Russian custody.

Secretive trial and disputed mercenary claims

In late 2024, a Moscow municipal court sentenced Mr Hubbard to six years and 10 months in a high-security penal colony following a trial held behind closed doors. Russian prosecutors alleged he had enrolled in a Ukrainian territorial defence battalion, claiming he had agreed to take up arms in exchange for a monthly payment equivalent to roughly AU$1,500.

However, supporters vehemently rejected the mercenary designation, noting his frail health and advanced age rendered him incapable of active combat. Independent legal observers and Western diplomats characterised the trial as a political showpiece, arguing the Russian legal system had routinely fabricated allegations against foreign nationals to serve broader state objectives. Al Jazeera reported that Russian state media offered minimal verifiable evidence throughout the truncated proceedings.

Bargaining chips in a frosty diplomatic climate

The release of Mr Hubbard highlights the precarious status of Western citizens caught in Russia amidst the ongoing war. Human rights organisations have repeatedly warned that the Kremlin has weaponised foreign detainees, treating them as diplomatic leverage to secure the return of convicted Russian operatives, intelligence agents and cybercriminals held abroad.

The broader practice was underlined last August during a monumental, multi-nation prisoner swap that freed high-profile figures including American journalist Evan Gershkovich and former US marine Paul Whelan in exchange for Russian prisoners. Mr Hubbard, whose profile was far lower, was not part of that initial agreement, prompting persistent private appeals from American consular officials.

Diplomatic relief amid ongoing detentions

While Mr Hubbard’s liberation brings immense relief to his relatives, multiple foreign nationals remain incarcerated across Russia’s sprawling penal network on charges ranging from espionage to treason. Canberra and Washington continue to maintain strict travel warnings, advising citizens against travelling to the Russian Federation due to the acute risk of arbitrary arrest and harassment by local security services.