Militants inspired by the Islamic State group's ideology are seeking to benefit from the desperation of young Palestinians to strengthen their foothold in the Gaza Strip.
Saudi Arabia has stripped its frequently criticised religious police of their powers to arrest, urging them to act "kindly and gently" in enforcing Islamic rules.
French President Francois Hollande will hold talks with Russian leader Vladimir Putin, as part of his diplomatic marathon to forge a broader coalition against Islamic State jihadists in the wake of the Paris attacks.
France's leading Muslim body said it would create a permit to preach for imams in a bid to root out extremists, as well as a new religious body to fight back against jihadist propaganda.
Hillary Clinton called for a US-led global fight to defeat the Islamic State group and shut down its flow of fighters, propaganda and weapons in the wake of the Paris attacks.
Britain should "think again" about taking part in air strikes on Islamic Statejihadists in Syria, Defence Secretary Michael Fallon said, after attacks in Paris that left at least 129 people dead.
CIA director John Brennan warned that the attacks in Paris were likely not a "one off event" and that he expects the Islamic State group has more operations in the pipeline.