Islamic State of Iraq and the Levant (ISIL)

Isis militant group threatens to activate sleeper cells in Silicon Valley to kill Twitter staff.

US secretary of state's first stop is Jordan and Saudi Arabia to discuss 40-nation coalition against Sunni insurgents.

King Abdullah announces barrier to cut 'number of infiltrators, drug, arms and cattle smugglers to zero'.

Iraqi forces tighten hold over strategic dam despite Isis militants' offensive.

At least eight Syrian airstrikes kill several Isis militants and many civilians in Raqqa.

Abu Hajar al-Sufi and two other senior Sunni insurgents believed killed in Isis-controlled Mosul.

Ali Hussein Kadhim recalls escape from claws of death by pretending to be shot by IS firing squad

Islam scholar translates Islamic State's plans for future 'caliphate' to expand into North Africa and Europe.

Fellow hostage who was held captive alongside Sotloff says the US journalist secretly said Jewish prayers.

British prime minister calls Sotloff's beheading 'an absolutely disgusting and despicable act'.

Islamic State militants warn against American and Kurdish forces' offensive in Iraq.

At least three Malaysian women travelled to Iraq and Syria to offer sexual favours for Islamic militants.

Jihadist group reportedly demands $6.6m ransom for woman, 26, kidnapped in Syria.

Canadian-born Isis militant tweets engineers-turned-Islamists are working on advance UAVs.

Bashar al-Assad regime signals cooperation with US to fight Sunni insurgents.

Foreign Secretary says Sunni insurgents could use areas in Iraq and Syria to launch terror attacks on the West.

Perry says although there is no evidence of militants' entry into US, it's a 'very real possibility'.

Pentagon officials say grave threat posed by IS militants in Iraq and Syria calls for new strategy.

The prime minister is sending out a calculated message over UK's response to Isis terrorists.

Former Islamic State hostage Nicolas Henin reveals US journalist James Foley tried to escape.

US to continue fight against terror group despite murder of James Foley.

German development aid minister Gerd Mueller accuses Qatar of funding Isis.

Profile of American journalist James Wright Foley executed by a Sunni insurgent in Syria.

James Foley's mother Diane issues statement imploring Islamic State jihadists against executing other hostages.

In video message, Sunni insurgents warn US against raids in Iraq as Obama vows to press ahead with offensive.

Public support for RAF air strikes in Iraq only 40% while 36% disapprove.

CIA and elite soldiers search for 'The Ghost' in biggest terror search since Bin Laden

Defence Secretary Michael Fallon made the announcement as RAF makes surveillance flights and troops deployed in Erbil.

Without directly mentioning US, Iraqi government takes objection to violation of its territorial sovereignty.

Hundreds of people gathered in central London on Saturday, calling for action to protect the people of Sinjar from attacks by the Islamic State in Iraq and Syria, formerly known as Isis.