Is Iran trying to intimidate its neighbors? How much of a threat is it to the US? Will tougher sanctions on Tehran solve any of the problems? Who will suffer from the pressure on Iranian oil exports? Will the UN nuclear agency delegation be able to clarify things, and what will its final conclusion be based on? CrossTalking with John Robson, Mamdouh G Salameh and Nader Bagherzadeh on January 30.