An article in the print edition of the Daily Telegraph (no link available, it would seem) details how the Royal Navy has regularly been allowing Somali pirates to go free because of the risk they would claim asylum if prosecuted in Europe and that there might be a possible infringement of their Human Rights.
Another 'take' on this story appears in The Register, written by an ex-RN officer.
Asylum? Human Rights? Well bugger me, there was I thinking that participants in acts of piracy ended up 'decorating the yardarm!