Saudi Arabia's crown prince has warned that oil prices could rise to "unimaginably high numbers" if the world does not act to deter Iran.
Mohammed bin Salman said a war between Saudi Arabia and Iran would ruin the global economy, following an attack on its oil facilities two weeks ago which it blames on Tehran.
Speaking to CBS News, he also said he accepted some responsibility for the killing of journalist Jamal Khashoggi.
But he denied personally ordering it.
The prince, who is considered the de facto ruler of Saudi Arabia, is suspected of personally targeting Mr Khashoggi, a Saudi journalist critical of the government in Riyadh.
Mr Khashoggi was killed in Saudi Arabia's consulate in Turkey on 2 October 2018.In an interview with CBS' 60 Minutes news programme on Sunday, he said: "I take full responsibility as a leader in Saudi Arabia, especially since it [the killing] was committed by individuals working for the Saudi government."
However, he denied ordering the killing of Mr Khashoggi directly, or having knowledge of it at the time.
Saudi authorities have since blamed a "rogue" operation for his murder and put 11 men on trial.
The prince also appeared to offer talks for a political solution to the civil war in Yemen, where government forces backed by a Saudi-led coalition are fighting Houthi rebels supported by Iran.
What about the crown prince's oil warning?
Iran has denied any involvement in the attacks on Saudi Arabia's oil facilities, which the strikes that knocked out about 5% of global oil supply and sent oil prices soaring.
But Mohammed bin Salman, the heir to the Saudi throne, said: "If the world does not take a strong and firm action to deter Iran, we will see further escalations that will threaten world interests.
"Oil supplies will be disrupted and oil prices will jump to unimaginably high numbers that we haven't seen in our lifetimes." BBC news