You can't answer the question, can you?
There was no intelligible question.
I can't answer until I know what definition of "on the brink" you are using.
What I believe is there was no program in operation to construct a nuclear weapon and if they wanted to, they have no delivery vehicle that can reach the US.
What Iran wanted was an enrichment program that they could spool up to a bomb if war with Israel looked on the horizon. By religious decree, they did not want to possess a bomb in storage like Israel does. Israel has ~100 warheads.
Seems reasonable. We've seen how countries that don't have a bomb get treated. We would have never attacked a nuclear power like this. You've taught everyone that lesson. Saudi Arabia, Qatar, Kuwait, Syria. Get a bomb before you get in the way of "Greater Israel" aka "Lebensraum".
There was NO threat that required trump to act before requesting Congressional Authorization of Force or Declaration of War as our Constitution dictates. He didn't want to go that route because there was no way to justify it and he knew even his own party would laugh at him.
60 days are up.
Regime change USA come November. It's going to be "Wild".
18 different US intelligence agencies assessments declared there was no eminent threat of Iran developing a bomb.
Trump chose to believe Bibi and his Mossad handlers Kushner, Witkoff, and Lutnick.