 Moving to Kraków in the Kingdom of Galicia and Lodomeria, a culturally Polish part of the Austro-Hungarian Empire, he used Jagellonian University's library to conduct research.He stayed in close contact with the RSDLP, which was operating in the Russian Empire, convincing the Duma's Bolshevik members to split from their parliamentary alliance with the Mensheviks.In January 1913, Stalin—whom Lenin referred to as the "wonderful Georgian"—visited him, and they discussed the future of non-Russian ethnic groups in the Empire.