(ABC NEWS) — ABC News can confirm that bin Laden wrote to others in al Qaeda about a plot to kill President Obama and General David Petraeus, then the commander of coalition forces in Afghanistan, writing: “The reason for concentrating on them, is that Obama is the head of infidelity and killing him automatically will make Biden take over the presidency. … Biden is totally unprepared for that post, which will lead the U.S. into a crisis. As for Petraeus, he is the man of the hour … and killing him would alter the (Afghanistan) war’s path.”