locked up money

Throughout the last months one could read about all of the money that belongs to several leaders in north africa and the middle-east and that has been locked up by many banks all over the world. We are not talking about a couple of million dollars but billions of dollars that has been locked up on accounts in both EU, Swiss  and American banks and which amounts now are rising thanks to interest upcoming from those sums. As the money is locked on ordinary personal accounts (and some company accounts) the banks, of course, have the liberty to use the money in their behalf. They can use it to make financial transactions and to give out loans to other customers i.e. private persons, companies and countries.

For a very long time I was wondering how the World bank has the possibility to lend mutli  billion dollar loans to countries as such Greece, Ireland and Portugal. A very new theory growing in my head is that this money, that has been locked up for an unlimited time, is free to move within the banking sphere. I mean, at the end, it is always just figures in the banks' financial statements that limits their possibilities. Who will then be able to follow up where the money comes from? Who will be able to check if some of the money does not origin from locked up money from dictators, military regims and corresponding sources? Who will be able to rule out loans that will make European countries survive just because it is coming from countries that Europe right now tries to liberate?

This could be seen as another reason pushing west world countries to engage into military action. I suppose, and please correct me if I am wrong, that this wealth, coming from both Ghaddafi and Mubarrak and even several other African leaders, is a big help in European financial planning.

At the same time, world banks should be happy, to be able to work with this amount of money without fearing to be forced to pay off or to transfer it to any other financial institution. I understand that my hopes, to use the money to spread to the poor people in those countries, is not possible as it is defined as personal assets, but is it right that those banks are allowed to use it for their own benefit?