Re: Star Trek III - The [Speculation Begins] (Spoilers)
It was a year between the Kronos incident and the end of the movie. If the Klingons hadn't started a war in that time, the incident was likely taken care of through backdoor diplomatic channels.
"I had no idea you were so... formidable. " - Anan 7 to James T. Kirk, A Taste of Armageddon