The World Bank provides population projections for all countries through 2050. Figures 1 and 2 display the evolution of population in Russia and Japan. Both projections look catastrophic. Population shrinks with acceleration. The birth rate is always lower than the death rate.
Figure 1. Depopulation of Russia and Japan: 2010 to 2050.
Figure 2. The rate of birth and death in Russia and Japan: 2010 to 2050