The comparison with Italy isn't particularly appropriate, IMHO. The ccy sovereignty makes all the difference.Quote from m22au:
Interesting to note that despite the prediction for many months / years, JGB 10-year yields are still at roughly 1%.
However Bass makes a good comparison with Italy - and how things have unraveled in that country in 2011.
He points out that due to the higher debt burden (measured in debt to GDP), Japan will face problems based on a smaller rise in bond yields.
I think he mentioned that the tipping point at which government revenues equals interest payments on debt (ignoring all other govt expenditure) is at a bond yield of about 3%.
This is obviously much lower than the levels at which PIIGS countries are in "bailout territory", being at roughly 7%.
As for how I'm playing the "Japan trade" - I'll happily wait for the 10-year to go above 1.35% or 1.50% and then sell the JPY against something (probably USD). As Martinghoul points out - the Japan situation could continue as is for many more years without bond yields rising dramatically.