Nikolajs Štelbaums was forced to move to Siberia because of which mass deportation that took place in March 1949?
Nikolajs Štelbaums:  As a child he was forced to move to Siberia along with his family in 1949, in connection with the Soviet mass deportation project Operation Priboi of more than 90,000 Estonians, Latvians and Lithuanians. Operation Priboi: Operation Priboi ("Coastal Surf") was the code name for the Soviet mass deportation from the Baltic states on 25–28 March 1949.
Operation Priboi