When history is told, May 2019 will be marked down as the time when the U.S.-China tech cold war began. U.S. moves to block supply to Huawei is an escalation beyond any of the trade-war tariffs and posturing that's come before. We can now expect China to redouble efforts to roll out a homegrown smartphone operating system, design its own chips, develop its own semiconductor technology (including design tools and manufacturing equipment), and implement its own technology standards. This can only accelerate the process of creating a digital iron curtain that separates the world into two distinct, mutually exclusive technological spheres.  Bloomberg.