seized in july. british authorities had seized an iranian oil tank they said was ill lie delivering oil to syria. tensions have been rising since they were blamed for an attack on a key saudi oil facility and today, the secretary of state reiterated those accusations. >> this was an attack by iran. on the world. an act of war here at the u.n. is the to prevent -- >> but saudi arabia hasn't either. >> primary job is to protect peace around the world. that was state on state act of war. >> i don't know why anybody listens yawn yan foreign minister. has nothing to do with iranian foreign policy and has lie d fo decades then resigned. not even worth responding to him. >> all right. i want to bring in susan glasser, a staff writer at "the new yorker" and a cnn global afares analyst.