Citigroup chief economist Willem Buiter:
There really is no politically feasible route back to sustained economic growth through monetary and/or demand stimulating policies for the EA, the UK, the US and Japan, for many years to come. As regards demand stimulus, expansionary fiscal policy will not be punished by the markets to the point of being self-defeating for all EA member states except for Germany (which will not do it on any significant scale for domestic political reasons). The US also may be technically able to use fiscal expansion to stimulate demand, but even if markets continue to be tolerant, political gridlock makes it impossible. Expansionary monetary policy is at the end of its rope in the US and Japan. The UK could cut the official policy rate by 50 bps and the ECB by 125 bps, and then they too are restricted to quantitative easing (QE), which I consider to be ineffective.