“I believe the greatest threat to Muslims today comes not from the outside world, but from within,” he told the UN General Assembly.

Najib voiced outrage at violence between the Sunni and Shia sects in Syria, Iraq and Pakistan, noting that nearly 5,000 Muslims died in conflict in the three countries in the holy month of Ramzan.

“It is time to end the killing and concentrate instead on building a common agenda for peace and prosperity,” he said.