The Pentagon's top brass has moved into second-stage contingency planning for a potential military strike on Iran, one senior intelligence official familiar with the plans tells RAW STORY.A second military official, although unfamiliar with these latest scenarios, said there is a difference between contingency planning -- which he described as "what if, then what" planning -- and "branches and sequels," which takes place after an initial plan has been decided upon.Adding to the concern of both military and intelligence officials alike is the nuclear option, the possibility of pre-emptive use of nuclear weapons targeting alleged WMD facilities in Iran.With allegations of a plan in place and contingency scenarios in play, several military and intelligence experts see this as proof of a secret White House order to proceed with military action.