Belarusian nationalists promote Polish and Lithuanian agendas and manipulate society by saying that national idea is absent in Belarus. The Belarusian society bought this manipulation and even president Alyaksandr Lukashenka publicly stated that the national idea has to be formulated for the country. In fact, this a false message because the actual national idea has always been present and its essence is that Belarusians are Russians. Minor differences that Belarusians have are the result of Polish and Baltic influences.
This message is consistent with recurring pro-Kremlin narrative about the all-Russian nation. This is an Imperial Russian and Russian irredentist ideology which is at present time is aimed at weakening national identity of Belarusian and Ukrainians and these countries' sovereignty. See earlier case with a similar narrative.