President Donald Trump finally did it. On Thursday (May 24) he pulled the plug on next month's big summit with North Korea's leader, Kim Jong-un. In sadness, but not anger, Mr Trump said Mr Kim's insults were too much for now. That said, he left the door open for a future meeting.
Why did get Mr Kim get cold feet and resume that anti-United States rhetoric?
North Korean apparats tell us that their dear leader skittish about negotiations after Mr Trump's national security adviser, Mr John Bolton, suggested the "Libya model" for ridding the Hermit Kingdom of its nuclear programme.
As vice foreign minister Kim Kye-kwan said of Mr Bolton last week, the North does not "hide our feelings of repugnance towards him."
This is also the view of many South Koreans, as the Washington Post reported this week. Mr Trump too got the memo.
Last week he made it clear that he was not seeking "the Libya model," a successful arms control negotiation sealed in the aftermath of the 2003 invasion of Iraq, which he conflated with his predecessor's humanitarian intervention in 2011.
It's understandable why autocrats shiver when they consider the fate of Libya's former dictator, Muammar Gadaffi. After giving up his nuclear programme, he had a few years in the good graces of the West.
But in the tumult of the Arab Spring, Europe and America would not allow him to slaughter his people en masse after he promised to do just that in a televised speech.
But the 2011 US and European intervention into Libya was not a result of the arms control deal that Gadaffi struck. If the terms of that bargain are the reason for Mr Kim's cold feet, then there wasn't much of a chance for peace on the Korean peninsula in the first place.
After all, what is the point of these high-level talks if the complete, verifiable and irreversible denuclearisation of North Korea is not on offer?
What's more, the US can promise Mr Kim not to invade his country. The US can entice Mr Kim with cash and trade. The US can perform all kinds of diplomatic acrobatics and pretend this tyrant is a statesman.
But no one can guarantee that one day the North Korean people will not rise up against him.
The Soviet Union had a nuclear arsenal that could destroy the world dozens of times over, but even that regime eventually met its end after Boris Yeltsin decided holding the empire together wasn't worth the repression required.
And this is exactly why Mr Bolton is valuable. The fact that the North Koreans despise him is a good thing for American interests.
Back when Mr Bolton was undersecretary of state in George W. Bush's first term, he used to keep framed copies of Iranian and North Korean propaganda sheets that denounced him. For Mr Bolton, the furious insults of dictators were badges of honour.
What's more, Mr Bolton knows the nuclear file and rogue states better than almost anyone else in the foreign policy establishment.
If anyone will know a tough nuclear agreement, it's the man who has spent the last three years trying to get America out of the weak one Barack Obama cut with Iran.
In this respect he complements Mr Trump, who is unencumbered by things like nuance and policy details. Mr Bolton is also a good insurance policy for an egotist president who could embrace any deal, even a weak one, just so he can declare a win.
While Mr Trump this week has made sure to say that he is prepared to walk away from the table, Mr Bolton's counsel is a valuable hedge against photo-op diplomacy if Mr Kim reconsiders his position and reaches out again to Mr Trump.
There is a precedent for having a John Bolton type in these kinds of summits. As my former editor Seth Lipsky wrote this month, Mr Ronald Reagan was also eager for a diplomatic victory, in his summit with Mr Mikhail Gorbachev.
The two leaders came close to an agreement that would end the arms race that had bankrupted the Soviets. But at the last minute, Mr Gorbachev asked Mr Reagan to end testing missile defence systems.
The Bolton of that scenario – administration hard-liner Richard Perle – told Mr Reagan that this demand would kill the Pentagon's programme. Mr Reagan went against popular opinion and walked out of the summit.
Within three years the Soviet Union collapsed. It's a lesson for Mr Trump.
Forget "the art of the deal"; sometimes you win by walking away.
Mr Reagan never received a Nobel Peace Prize for reaching a grand bargain with Mr Gorbachev. He had to settle for winning the Cold War. BLOOMBERG
ABOUT THE AUTHOR:
Eli Lake is a Bloomberg Opinion columnist covering national security and foreign policy. He was the senior national security correspondent for the Daily Beast, and covered national security and intelligence for the Washington Times, the New York Sun and UPI.