The funds were, from what I can understand, withdrawn from the Bahamas, of which Nassau is the capital city.
>What's in Nassau?
A complete lack of regulatory oversight, and a government conducive to facilitating international monetary crimes.
They [obviously must] have the a-OK to play this role from at least US (Monroe Doctrine) and UK (Commonwealth).
Make no mistake, if the US wanted to end money laundering in its backyard, it could do so. These jurisdictions exist because they provide value, especially to people with the influence to stop them, who see no reason to interfere in a system that benefits them without personally hurting any individual. Any negative externalities are sufficiently diffuse so the public can't pin the blame for the continued existence of the system on any individual beneficiary of it. So why would anyone stop it?