At this point last year, Twitter was a company that had a hard time attracting new people to surf and tweet, but it was quite skilled at generating ad dollars from its die-hard users. Now Twitter’s problem has reversed. It’s still a mess of a company, but in a fresh way. People are using Twitter more, but advertisers are …

  The news from Afghanistan is as relentless as it depressing: six aid workers murdered by IS, at least 20 dead from a suicide bombing at the Supreme Court, more territory lost to the Taliban, more opium growing in the fields. Maybe that explains Donald Trump’s silence on the war since becoming president. But it does not excuse it. The …

  On November 8, Prime Minister Narendra Modi of India surprised investors and consumers by declaring that 86 percent of the nation’s money stock would no longer be a medium of exchange or store of value. In meetings in Mumbai and New Delhi recently, I learned that the move was intended to ferret out illegally garnered funds, and that the …