ISIS just made a potentially disastrous mistake

The savage attacks in Turkey, Bangladesh, Iraq and Saudi Arabia should convince Muslim nations and the West that they share a common enemy in extremist groups such as the Islamic State. What they need now is a shared command-and-control structure, like what the U.S. and Britain forged in December 1941, after the shock of Pearl Harbor. Merging military and intelligence resources wasn’t easy, even for longstanding partners in Washington and London. But Prime Minister Winston Churchill knew that once America had fully joined the battle, the allies’ eventual victory was certain.

Similar confidence would be inspired by a command structure that truly fuses the resources of the U.S., Europe, Turkey, Iraq, Saudi Arabia, Indonesia, Pakistan and the many other nations that have been targeted by Islamic State terrorists.

A sign of how unpopular these attacks are with Muslims is that the Islamic State isn’t taking credit for the attacks in Turkey and Saudi Arabia — even though it’s widely seen as the likely perpetrator — and that other Islamist groups are condemning the violence, especially the bombing in the holy city of Medina.

On Tuesday the SITE Intelligence Group gathered some of the online ripostes from rivals of the Islamic State. An Australian cleric named Abu Sulayman, who is a member of Al Qaeda affiliate Jabhat al-Nusra, tweeted: “The #MedinaBlast is a criminal act that Muslims must condemn.” Another pro-Al Qaeda account tweeted: “[I]f ISIS is not behind the attacks in Istanbul and Medina they should deny their involvement.”