Conspiracy theorists will tell you it was a US planned false flag attack...I don't know who the hell is attacking the Tankers, of course I don't..........However is it a coincidence that since the Iranians said that if nobody will buy our oil then they won't be able to buy from anyone else either?? They made that statement and isn't this the second/third attack since they made it? Surely this can't just be a coincidence??? who else would have gained anything from it?
Edit.........Ship to ship missiles can travel over twenty miles in other words out of natural sight over a horizon so you wouldn't always see them coming unless you had the right equipment. Which to my knowledge no normal tanker has the need for.......so not necessarily a mine......