I agree that the natural state with the total paranoia is tad silly. Even the books toy with the idea of cooperation between Tri-solaris and Earth. It would have been better if it was treated as the domineering ideology in their area of space and a theory with flaws from the characters.

If North Korea location was secret, there where no way of telling the difference between North Korea and Switzerland, we had no countermeasures against nukes, and communication increases the risk that North Korea finds you, tensions would way more likely lead to a fist strike doctrines. You only really need one actor with the doctrine to force others to adjust to it.