Since 2009,sovereign debt risk in advanced economies including Europe,Japan and the United States has exposed and gradually deteriorated.European sovereign debt crisis has not yet settled and is likely to deteriorate further or even trigger a new financial turbulence.In the short term,sovereign debt risk in the United States and Japan will be under control.However,in the long term,fiscal sustainability in both the United States and Japan will face large uncertainties.Sovereign debt risk in developed economies has become the sword of Damocles,hanging over the world economy.In this regard,China should actively take measures to prevent potential impact from sovereign debt risk in advanced economies. <<