The Independent's excellent Defence Correspondent, Kim Sengupta, has an editorial in the i paper today on the latest developments in Iraq.
It serves as a reminder, compared to all the waffle on the motivations of fighters in Syria, Iraq and elsewhere, of the motivations of ISIS:
The jihadists have created what their name suggests - the Islamic State in Iraq and Syria - winning control of Iraq's Sunni heartland and the bloodiest of the rebels fighting Bashar al-Assad's regime.
When discussing jihadist fighters - from Afghanistan to Algeria to Zanzibar - we would do well to remember not just who these groups are fighting against, but what they are fighting to create. Until we do that, our debates about such conflicts will continue to be partial, restrictive and dominated by references to past blunders.