While leaving Turkey, Pope Francis warned about "lukewarm Christians" and condemned Palestinian violence in the troubled Middle east.

 "You just can't say that, just as you can't say that all Christians are fundamentalists. We have our share of them (fundamentalists). All religions have these little groups," Pope Francis said.

Speaking to the press on his way home from Istanbul, Pope Francis had some harsh things to say about the Middle East.

"You just can't say that, just as you can't say that all Christians are fundamentalists. We have our share of them (fundamentalists). All religions have these little groups. They (Muslims) say: 'No, we are not this, the Koran is a book of peace, it is a prophetic book of peace,'" the Argentine Pope told the press.

On Sunday the Pope, who is the spiritual leader of 1.2 billion Roman Catholics, said on that equating Islam with violence was wrong.

The Pope called on Muslim leaders to issue a global condemnation of terrorism. Pope Francis told reporters he understood why Muslims were offended by westerners who equated Islam religion with terrorism.

In 2006, Pope Benedict XVI raised protests throughout the Islamic world when he suggested that he believed Islam espoused violence in a speech.

Benedict has since apologized.

Pope Francis has been trying to foster cooperation with moderate Islam.

In talks on Friday with Turkish President Tayyip Erdogan, Pope Francis suggested Islamic leaders issue a global condemnation of terrorism.

"I told the president that it would be beautiful if all Islamic leaders, whether they are political, religious or academic leaders, would speak out clearly and condemn this because this would help the majority of Muslim people," he said.

The Pope condemned Islamic State's insurgents for driving Christians "out of the Middle East."