Rebecca Zisser / Axios

North Korea has not abandoned its nuclear weapons program, continues to test missiles and is being blamed for the death of Otto Warmbier, a U.S. student arrested in North Korea and sent home in a coma.

The Atlantic's Mark Bowden has called North Korea "the worst problem on earth" — it already has the power to destroy Seoul (home to 24 million), is developing missiles to hit Los Angeles, and its collapse could cause the biggest refugee crisis since World War II. President Trump has tried to enlist China to help control the rogue regime but tweeted that "has not worked out."

So before North Korea can nuke L.A., or kill millions on the Korean peninsula, what should the U.S. do? We asked 5 experts on U.S./North Korean issues to lay out the challenge and pick a course of action. Here are their answers:

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Biden confidants see VP choices narrowing to Harris and Rice

Photos: Tom Williams/CQ-Roll Call, Inc via Getty Images; Win McNamee/Getty Images

Confidants of Joe Biden believe his choices for vice president have narrowed to Sen. Kamala Harris and Susan Rice — and would be surprised if he picks anyone else.

The state of play: This is a snapshot of the nearly unanimous read that we get from more than a dozen people close to him.

An election like no other

Illustration: Eniola Odetunde/Axios

The coronavirus will make the 2020 presidential election different from any in modern history: Voting that begins earlier, results that take longer, mail carriers as virtual poll workers and October Surprises that pop in September.

The big picture: Perhaps 80 million Americans will vote early, by mail or in person, Tom Bonier, CEO of TargetSmart, a Democratic political data firm, tells Axios. That's going to set up more of an Election Season than an Election Day — and increase the odds of national turmoil over the vote count.

Exclusive: Inside McCarthy's new GOP messaging platform

House GOP Leader Kevin McCarthy (R-Calif.). Photo: Tasos Katopodis/Getty Images

House Republican Leader Kevin McCarthy (R-Calif.) has given his GOP colleagues new marching orders for stump speeches between now and November, as incumbents worry about how President Trump's own challenges may strain their re-election bids.

Driving the news: McCarthy delivered a PowerPoint presentation to the GOP conference in person last Thursday at the Capitol Visitor Center, with several members joining via Zoom, lawmakers and aides familiar with the gathering tell Axios.