BERKELEY: Monetary policy risks becoming ineffective in a world where growth is sluggish, economies are deeply interconnected and interest rates are already near zero, a top European Central Bank policy maker said on Saturday. Speaking at University of California Berkeley, ECB Executive Board Member Benoit Coeure called for academics and policymakers to address issues at the root of a global economic malaise, singling out the eurozone’s inability to revive domestic demand. “The capacity of the global economy to generate growth is under question.”