The money is spent (for the people) ahead of retirement ?
Whether it is retirement money like the CPF or welfare funds which are used to save life, eventually they need to be returned to the people. These funds should not be invested in risky investments.
Normally govt bonds are fairly stable investments but in both these cases there are underlying risks.
In the case of Spain, the investment is used to pay for debts owed and the economy has to improve substantially to be able to repay these, a tall order because for Spain it means a major restructuring of its economy and society.
In the case of Singapore, most people do not understand what the Govt is doing with the money, taking contrary positions when most investors were pulling out during the 2008 crisis, making major losses when we chickened out and liquidated our positions inspite of billion dollars losses, clear evidence that the situation had been wrongly read.
When only Singapore, Korea and Saudi, all newbies in global investment, were about the only investors left, we should be able to guess how wrong it was going to be. And yet we jumped in. This high stake casino play is the risk our retirement money is facing.