Moscow might keep Australian war prisoner Oscar Jenkins for a future high-profile swap with Russians held in jail in the West, an expert says.

Tennis Australia says it has advised its players against competing in Russia following reports that Davis Cup team member Thanasi Kokkinakis was featured in an exhibition in St. Petersburg two months ago.

Oscar Jenkins, once feared dead, is believed to be alive and in Russian captivity. Foreign Minister Penny Wong has called for his release and warned Moscow the federal government's response will be "unequivocal" if he is not treated humanely.

Russian officials have confirmed Oscar Jenkins is alive, Penny Wong has said, ending nearly a month of uncertainty around the captured Australian fighter’s fate.

Australian Prime Minister Anthony Albanese said Wednesday Russia has reported Oscar Jenkins is alive and in custody. The Australian man went to Ukraine to fight against Russia's invasion and was feared dead.

The Australian government has been told by Moscow that one of its citizens in Russian captivity is still alive. Oscar Jenkins, a 32-year-old teacher, was captured last year while fighting for Ukraine.

Oscar Jenkins went missing on Dec. 16 in 2024 while on a combat mission near the village of Mykolaivka in Luhansk Oblast.

Australian Oscar Jenkins is alive as a prisoner of war in Russian territory and his welfare is "normal", according to Russia's ambassador after execution fears.

Government officials believe an Australian soldier reportedly held captive in Russia is alive after initial fears he was killed.