It was a busy day for President Donald Trump. First, he penned a letter to Kim Jong Un canceling their planned summit. Then he warned the military is ready in case there's a war. Later, he freed up banks from post-Great Recession rules and then pardoned a deceased boxer at the prodding of Sylvester Stallone. —Josh Petri

Here are today's top stories

Trump's take: "While many things can happen and a great opportunity lies ahead, potentially, I believe this is a tremendous setback for North Korea and indeed a setback for the world." 

This should be a lesson for Trump, Eli Lake writes for Bloomberg Opinion. "Forget 'The Art of the Deal'; sometimes you win by walking away."

So much for the Turkish lira's momentary stability. The currency resumed its nosedive, falling as much as 5 percent on Thursday. 

The U.S. birth rate is at its lowest in 30 years, despite the economic recovery and low unemployment. The likely reason: Millennials have been dealt a terrible hand.

Elon Musk's stock-options tweet violated U.S. labor law, the union trying to organize Tesla's California car factory contends. Musk has been on a Twitter tear all week.

Top mortgage officers can make millions of dollars a year pitching government-backed loans to borrowers with weak credit or low incomes. And home prices are rising quickly.

What's Joe Weisenthal thinking? The Bloomberg news director knows there's a lot of anxiety about trade and China as well as North Korea. Tensions are rising in emerging markets and everyone is wondering what the Fed is going to do. But the U.S. economy is humming along fine.

What you'll need to know tomorrow

• Trump signed a huge rollback of financial regulation. 
• The self-driving Uber car involved in a fatal crash wasn't programed to brake.
• Norwegian salmon prices are surging. Avocado prices are falling.
• The Justice Department is investigating whether traders are manipulating the price of Bitcoin.
• Netflix surpassed Disney and became the world's biggest media stock.
• Flat-track racing is the most exciting sport you've never heard of.
• A third of New Yorkers are looking to move out of the city.
• Deutsche Bank lost $30 billion due to a 2014 payment error.

What you'll want to read tonight

Scooter Startups Launched a Revolution. Can They Control It?

The likes of scooter startups Lime and Bird are a hit, but their popularity is polarizing, thanks to scooters thrown in rivers and riders illegally zipping by on sidewalks. The companies say some chaos is to be expected in the early days of such a shift, but there's been less-than-careful consideration of the consequences. 

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