well let's admit that
Romans 13 would not have been necessary if they had not asked for a king; having asked for and gotten a king, the edict to obey the king/government only makes sense, sure. I'm not advocating against obeying laws.
For that matter, i think one might be forgiven for defensive actions; but who among us has ever experienced a defensive war, or a just war as defined? They are abstractions, that no one alive has any experience with. At least that i am aware of.
And it is probable that Tolstoy's reaction to Christ was really a denial of Russian Orthodoxy, don't you think?