What is Russia's all-round geo-strategy of East-West balance?

Russia is born with external expansion, which is rooted in its deep sense of insecurity. From the geostrategic point of view, this is "space for time". As long as Russia can expand its borders, it will have more time to mobilize troops and resources. Even if the enemy has gone deep into the hinterland of Russia, if its hinterland is wide enough, then Russia can wait patiently and turn defeat into victory by destroying the enemy's supply lines and dispersing the enemy's troops.