Is truth that in the past many international elements have wanted to intervene in Russia, it was a great power and the largest country in the world, but it is not strange, if you compare the invasions to Russia with those of Spain, Germany, China or even Mexico, you will notice similar results.
There are always international agents threatening the border, that is why there are armies.
Excellent point! Thanks for bringing this up.
Exactly why Russia spends more than most nations on defense.