John Bolton in Singapore in 2018 for the Trump-Kim summit. Photo: Saul Loeb/AFP/Getty Images

John Bolton made clear Monday just how deeply he disagrees with President Trump's North Korea policy — just 20 days after he was ousted as the president's national security adviser.

Why it matters: Bolton said he was glad to be able to give his views "in unvarnished terms." If he continues to do so on a broader range of topics, Bolton could be one of Trump's most damaging foreign policy critics.

  • He did say, though, that he has a "self-imposed restriction" on discussing specifics from his time in the White House.

Bolton told an audience at the Center for Strategic and International Studies that North Korea was and would continue to be committed to keeping and expanding its nuclear weapons program, rendering Trump’s summit-based strategy pointless.

  • He contended North Korea wouldn’t "ever voluntarily give up enough" in negotiations, and said the U.S. should consider a military option. He cited regime change as one potential outcome.
  • He also raised the "Libya model" of denuclearization — a comparison that outraged North Korea and, as a result, Trump when he referenced it while serving in the White House. Libyan dictator Moammar Gadhafi was toppled a decade after giving up his nuclear program.

On his personal impressions of Kim Jong-un, Bolton said: "I think it's clear he’s in charge. I think it's clear he makes the decisions. And I think he feels very comfortable in that role."

  • Bolton said he was sure "the leadership of North Korea is delighted I'm here today in a private capacity," rather than in the White House.

The big picture: Bolton argued that the U.S. should be more deeply engaged around the world and must strengthen ties with allies — views that runs contrary to Trump's.

Go deeper: Bolton's chaotic White House departure

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Louisville officer: "Breonna Taylor would be alive" if we had served no-knock warrant

Breonna Taylor memorial in Louisville. Photo: Brandon Bell/Getty Images

Sgt. Jonathan Mattingly, the Louisville officer who led the botched police raid that caused the death of Breonna Taylor, said the No. 1 thing he wishes he had done differently is either served a "no-knock" warrant or given five to 10 seconds before entering the apartment: "Breonna Taylor would be alive, 100 percent."

Driving the news: Mattingly, who spoke to ABC News and Louisville's Courier Journal for his public interview, was shot in the leg in the initial moments of the March 13 raid. Mattingly did not face any charges after Kentucky Attorney General Daniel Cameron said he and another officer were "justified" in returning fire to protect themselves against Taylor's boyfriend.

U.S. vs. Google — the siege begins

Illustration: Sarah Grillo/Axios

The Justice Department fired the starter pistol on what's likely to be a years-long legal siege of Big Tech by the U.S. government when it filed a major antitrust suit Tuesday against Google.

The big picture: Once a generation, it seems, federal regulators decide to take on a dominant tech company. Two decades ago, Microsoft was the target; two decades before that, IBM.

Dion Rabouin, author of Markets
2 hours ago - Economy & Business

Why the stimulus delay isn't a crisis (yet)

Illustration: Aïda Amer/Axios

If the impasse between House Speaker Nancy Pelosi and the White House on a new stimulus deal is supposed to be a crisis, you wouldn't know it from the stock market, where prices continue to rise.

  • That's been in no small part because U.S. economic data has held up remarkably well in recent months thanks to the $2 trillion CARES Act and Americans' unusual ability to save during the crisis.