ALSO READSaudi Arabia detains critics as new crown prince consolidates power Saudi Arabia King's son Mohammed bin Salman named as crown prince China offers to buy 5% of Saudi Aramco directly: Sources Saudi king empowers 31-year-old 'reformer' son in succession shake-up Saudi king names son as heir to throne
"We are returning to what we were before -- a country of moderate Islam that is open to all religions and to the world," he said at an economic forum in Riyadh.
"We will not spend the next 30 years of our lives dealing with destructive ideas. We will destroy them today. We will end extremism very soon," he added.