As we enter 2014, the five-year bull market in developed market equities remains in full swing. Recently, I argued that equities now look overvalued, but not egregiously so, and that the future of the bull market could depend on when the level of global GDP started to bump up against supply side constraints, forcing a genuine tightening in global monetary conditions.

Today, this blog offers a year end assessment of three crucial issues that relate to this: the supply side in the US; China’s attempt to control its credit bubble; and the ECB’s belief that there is no deflation threat in the euro area. At least one of these questions is likely to be the defining macro issue of 2014 and beyond.

1. When will the Fed start to worry about supply constraints in the US?