personaly think that US made this incident with Harp (you can find out more about it with googling HARP)to deflect the mines from events of meadle east specially bahrain and libya. now a real tragedic incident is hppening in bahrain. saudi arabia's army with order of US is killing a lot of bahrainies and all the western medias are silent.
US government do it's best to save it's benefits in meadle east. specially he want prevent Iran to have more active role in ME.for this goal even he is ready to kill japanese ,bahrainies and libians.