Saudi Arabia’s crown prince, speaking at a major investment conference, has promised his kingdom will return to “what we were before – a country of moderate Islam that is open to all religions and to the world”.

Mohammad bin Salman bin Abdulaziz Al Saud made the announcement at the beginning of the landmark Future Investment Initiative in Riyadh on Tuesday.

The country would also do more to tackle extremism, the prince said. “We will not waste 30 years of our lives dealing with extremist ideas; we will destroy them today,” he said when asked by Maria Bartiromo of Fox Business Network.