it is monday, november 30th. we are in paris. the authorities here are very much on edge. there is a frenzy of police activity continuing in the hopes of getting a handle of the spider web of gjihadists in paris. and 150 heads of state here for the conference on climate change. as some say holding the u.n. event is a show of strength. others see it as a real risk. to be unprecedented security here. the french have not had more security here as they do here today. and despite the ban on protests, you saw violent conflicts at the plaza de la republique. hundreds were arrested at the memorial for the attacks of the victims. right now, leaders from