I have 2 passports: Russian and Canadian. I never travelled to a third country with my 2 passports yet :) As a Canadian I don't need a visa to go to Norway, for example. My questions are: under which passport number do I book an airplane ticket? Do I show both passports when I leave Russia and arrive to Norway? Into which one do they put a stamp?
I tried calling various agencies and even government offices but no one seems to know the exact procedure!