The drift of all this blather from Iran is one of fear and insecurity which doesn't lessen the possibility of overt violence but the opposite. They feared their own populace after stealing the elections and crushed the opposition. Compare someone secure in his ability to defend himself and another standing on the corner screaming and ranting at you. On whom would you bet would unprovoked run head-on into you?
15 police officers killed in Colombia helicopter crash (Reuters)