Bloomberg Twitter Inc., struggling to attract new users, will lift its 140-character limit on tweets in an experiment with a small group that may expand to the entire social media platform. The test will let users send tweets with as many as 280 characters. Lengthening the character limit may result in more engaging conversation on the platform, helping its bid …

Bloomberg One year after designer Maria Grazia Chiuri showed her first collection for Christian Dior Couture, Chief Executive Officer Sidney Toledano says customers are responding to her creative changes. Chiuri, who was formerly co-creative director of closely-held Valentino SpA, is the first woman to lead Dior since it was founded in 1946. “She is totally excited—obsessed—to understand what is the …

The Trump administration often talks about North Korea policy as if it’s an on-off switch. President Trump thundered that the US will “totally destroy” North Korea to defend itself and its allies. But Defense Secretary James Mattis blandly insisted the next day that it’s “still a diplomatically led effort.” Somewhere in this maze of public statements—including the announcement of new …