Katerina Tikhonova, one of the two alleged daughters of Russian President Vladimir Putin, makes an appearance at a flagship economic forum in the Russian president's home city of Saint Petersburg. Tikhonovo, a technology executive who works in areas connected to the Russian military, spoke Thursday on a panel about the role of the defence sector in boosting Russia's "technological sovereignty." Putin keeps details of his family life notoriously secret and has never publicly confirmed that the two women -- Maria Vorontsova, 39, and Katerina Tikhonova, 37 -- are his daughters. However, the pair has been widely linked to Putin through various media reports, and in 2022, the US Treasury sanctioned both Vorontsova and Tikhonova as "daughters of Russian President Putin." IMAGES