Russia is an enemy.
Rival, not enemy.
Russia does not have to be an enemy. If Nixon could go to Moscow in 1972 to start Glasnost then we can find a way to deal with Putin and find a way to deescalate tensions.
I have no doubt had Hillary won some sort of war with Russia might have happened. No one will win in any kind of war, it has to be avoided.
To paraphrase Frankie Five Angels in “Godfather II”, “you can do business with Putin, you can respect Putin, but you can never trust Putin.” That is the mantra Trump needs to live by with Putin.