The Rescue of Uri Gregorav was a minor confrontation of Syphon Filter 2 where Lian Xing infiltrated a gulag to stop the Russian's execution.
The conflict was short but intense; it concluded with Xing falling into unconsciousness from the effects of Syphon Filter.
Events
Prelude
"It's my life at stake if we don't get the other half of the PharCom data. And it's my people who will die if Shi-Hao gets Phase 2 of the Syphon Filter virus. Besides, I'm the only one who knows the layout of the prison."
Although Lian Xing had managed to capture Gregorov prior to this incident, it turned out that the person was in fact an imposter and the real individual was being held at Point 35, a female gulag in Siberia built during the Stalinist purges to capture the wives and mothers of poltical dissidents. Nikita Krushchev seemingly closed it down in 1954 but in fact it remained in operation. Lian had been held there in the past, 8 years after her capture in Afghanistan on her first assignment for the People's Republic of China, and before the Agency recruited her.
Vladimir from the Russian SVR explains that Gregorov was investigating an international arms consortium