Here’s a maxim for life as a famous economist: If your theory wins a Nobel Prize, look out — it might already be running into big problems. When the Black-Scholes-Merton option-pricing model won the prize in 1997, it had already required some major tweaks to fit new data; a decade later, it was being blamed for the financial crisis. …

  A month after it ended, the 2016 US presidential election is only getting stranger. Intelligence agencies and private researchers now largely agree that Russia conducted a pervasive online campaign — through hacking, theft and propaganda — to disrupt the electoral process. The question is what to do about it. The first priority should be conducting a formal investigation. Yet …

  Taiwanese President Tsai Ing-wen’s telephone call to US president-elect lasted only for 10 minutes. But it has upended the decades-old One China policy. And this was the closest a Taiwanese president came to getting a formal recognition by United States. Tsai telephone call stirred the hornets’ nest. And it led to a barrage of blunt criticism both from China …