The US carries out its first air strike against Islamic State (IS) militants under a new strategy to defeat the group in Iraq.
World leaders back military measures to help defeat Islamic State fighters in Iraq - but make no mention of the tougher diplomatic challenge in Syria.
The brother of the British man who was murdered by Islamic state militants says his life was about love, not hatred.
The UK will take whatever steps are necessary to combat the Islamic militants responsible for the murder of British aid worker David Haines, the Prime Minister David Cameron says.
Have we learned from 9/11? From my own experience reporting sporadically across the region for over three decades, my fear is that we have not.
With US public opinion increasingly favouring intervention against Islamic State militants, how far is President Obama prepared to go in his speech to the nation tonight?
The UK arm of Kurdish guerrilla army the PKK, proscribed by the Home Office as a terrorist organisation, has had a resurgence since its war with IS. Is it time to de-list and arm them?
The PKK could play a key role in the battle against Islamic State, but their roots as Marxist guerrillas leaves the west wary. Channel 4 News looks at how the group is pursuing a Kurdish Spring.