A day after Rouhani announces discovery of 53 billion barrel field in southwestern province, oil minister says only a small portion can be extracted

Iranian oil minister warns of 'physical and cyber threats' following assault on Saudi facilities that has been blamed on Tehran

FM Zarif says talk show 'went against national interests' for segment detailing covert delivery of 1m barrels of crude oil to China in defiance of US sanctions

Bijan Zanganeh scant on details, but says Iran covertly circumventing 'evil' American oil embargo through 'unconventional means'