In this pool photograph distributed by the Russian state agency Sputnik, Russia's President Vladimir Putin visits the Moscow Institute of Physics and Technology in Dolgoprudny in the Moscow region on January 23, 2026. (Photo by Alexander KAZAKOV / POOL / AFP via Getty Images)

In this pool photograph distributed by the Russian state agency Sputnik, Russia's President Vladimir Putin visits the Moscow Institute of Physics and Technology in Dolgoprudny in the Moscow region on January 23, 2026. (Photo by Alexander SHCHERBAK / POOL / AFP via Getty Images)

In this pool photograph distributed by the Russian state agency Sputnik, Russia's President Vladimir Putin visits the Moscow Institute of Physics and Technology in Dolgoprudny in the Moscow region on January 23, 2026. (Photo by Grigory SYSOYEV / POOL / AFP via Getty Images)

In this pool photograph distributed by the Russian state agency Sputnik, Russia's President Vladimir Putin visits the Moscow Institute of Physics and Technology in Dolgoprudny in the Moscow region on January 23, 2026. (Photo by Alexander SHCHERBAK / POOL / AFP via Getty Images)

In this pool photograph distributed by the Russian state agency Sputnik, Russia's President Vladimir Putin visits the Moscow Institute of Physics and Technology in Dolgoprudny in the Moscow region on January 23, 2026. (Photo by Alexander SHCHERBAK / POOL / AFP via Getty Images)

In this pool photograph distributed by the Russian state agency Sputnik, Russia's President Vladimir Putin visits the Moscow Institute of Physics and Technology in Dolgoprudny in the Moscow region on January 23, 2026. (Photo by Alexander SHCHERBAK / POOL / AFP via Getty Images)

In this pool photograph distributed by the Russian state agency Sputnik, Russia's President Vladimir Putin visits the Moscow Institute of Physics and Technology in Dolgoprudny in the Moscow region on January 23, 2026. (Photo by Alexander SHCHERBAK / POOL / AFP via Getty Images)

In this pool photograph distributed by the Russian state agency Sputnik, Russia's President Vladimir Putin visits the Moscow Institute of Physics and Technology in Dolgoprudny in the Moscow region on January 23, 2026. (Photo by Alexander SHCHERBAK / POOL / AFP via Getty Images)