[revealer]

Agreed. A contract is a contract and the bond issuer cannot break the contract but if another entity bans the issuer from using the currency as stated in the contract then the issuer is forced to default - not that the issuer is bankrupt or insolvent.

So who's fault?

Please use your brain instead of emotion to come to a conclusion!

Note: FORCED

Is that written in the Contract? Say before, no point arguing without reading the Contracts. If it is covered in the Contract, quite sure the issuer, in this case, the Russian Government must clarify after showing the Contract.; otherwise, how are future bond buyers going to believe it.