Russia has minimal opportunities for territorial, economic, or political growth in its periphery. It is hemmed in by seas, the Central Asian steppe, China, and the EU/NATO. Turkey holds critical geography, and leverage over Europe. It is bordered by soft and restive Middle Eastern countries. Its borderlands, especially the Kurdish ones, are a constant thorn in its side tempting more direct management.
Russia has no less oportunities for territorial expansion. It can move where there is a sizable Russian-speaking population - Ukraine, Belorus - and to the Central Asian steppes (Kazakhstan).
The same is true about Russia.
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