Aljazeera.com | Oil price crosses $70, amid Iran deal tensions Aljazeera.com Oil prices gained momentum after investors saw increasing possibility that the US could withdraw from the historic Iran nuclear deal, and heightened worries in tensions between Iran and Saudi Arabia could revive. President Donald Trump signalled this ... Trump security pick John Bolton likely to turn up heat on Iran and boost oil prices What's at Stake for Oil as Trump Appoints Another Iran Hawk? Oil hits $70 a barrel as risk to Iran nuclear deal mounts |