> Because the risk of escalation and nukes are unacceptable.
He can lob a nuke right now, but he knows he will lose against the US.
He will retreat to avoid an even bigger defeat.
Thugs I fought in my teenage years, even when they brought a knife to the fight, when they are afraid of getting KOed, and humiliated in front of their peers, they wrap up, and leave.
They don't want to get beaten up, risk humiliation, and potentially committing murder at the same time.
Similarly, US can give Russian state 2 choices, a defeat with orderly surrender, or end like Yugoslavia, but 10 times worse.
He can lob a nuke right now, but he knows he will lose against the US.
He will retreat to avoid an even bigger defeat.
Thugs I fought in my teenage years, even when they brought a knife to the fight, when they are afraid of getting KOed, and humiliated in front of their peers, they wrap up, and leave.
They don't want to get beaten up, risk humiliation, and potentially committing murder at the same time.
Similarly, US can give Russian state 2 choices, a defeat with orderly surrender, or end like Yugoslavia, but 10 times worse.