US benchmark borrowing costs plunged to levels last seen in 1946 and those for Germany and the UK hit all-time lows as investors took fright at what they see as a disjointed policy response to the debt crisis in Spain and Italy.

In a striking sign of the flight to haven assets, German two-year bond yields fell to zero for the first time, below the equivalent rate for Japan, meaning investors are willing to lend to Berlin for no return.

US 10-year yields fell as low as 1.62 per cent, a level last reached in March 1946, according to Global Financial Data. German benchmark yields reached 1.26 per cent while Denmark’s came close to breaching the 1 per cent level, hitting 1.09 per cent. UK rates fell to 1.64 per cent, the lowest since records for benchmark borrowing costs began in 1703.