The next round of US tariffs on Chinese imports — $200 billion worth — could come as soon as this week, after talks to avert them ended without resolution. China is set to retaliate promptly with duties on nearly everything it imports from the United States. Even as he signaled an initial deal with Mexico, President Donald Trump declared it ...

From debt vultures and cooked books to fiscal time bombs, Argentine President Mauricio Macri inherited quite the mess. In his three years of office, he’s handled most of these challenges remarkably well, drawing cheers from investors and his compatriots. Here was a decisive, business-friendly manager, talking transparency and free-market initiatives to end what might have been “the largest populist experiment” ...

This week, California’s state legislature approved a bill requiring the state to get 100 percent of its electricity from carbon-free sources by the year 2045. It’s a landmark for power sector decarbonization, and if Governor Jerry Brown signs the bill, it will require a transformation of the state’s energy system. California already gets 29 percent of its electricity from zero-carbon ...