When a bond matures, what financial obligation is placed on the bank?

The bank is obligated to pay the bondholder the face value of the bond...if it does not it has been deemed as filed for bankruptcy...yes it needs the cash...the CDS does not relate to this question.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.