The Turkish government said it has asked parliament to authorise military action in Iraq and Syria to halt the advance of Islamic State (IS) jihadists.
Armed British warplanes are flying daily missions over Iraq and would launch air strikes if called in by local forces on the ground.
Blamed by some for prompting the rise of the Islamic State insurgency, Turkey has finally taken steps to tighten its borders with Iraq and Syria.
A suicide bombing and shelling in the Shiite-majority Kadhimiyah district of north Baghdad killed at least 14 people on Thursday.
The White House insisted that President Barack Obama was authorized to strike the Islamic State in Iraq and Syria under a law passed by Congress.
Barack Obama's vow to take the fight to jihadists will expand a US-led air war already underway and likely require deploying more special forces.
War is not the way to address injustice, Pope Francis said.
Two car bombs exploded in Shiite-majority areas of the Iraqi capital Thursday, killing at least 17 people.
The so-called "Islamic State" released a video showing a masked militant with a London accent apparently beheading an American journalist.
At least 16 Kazakhstanis are know to have joined the extremist militants of the Islamic State of Iraq.
Briyar Kamal, a 24-year-old Kurdish student, but instead of relaxing during his summer holiday he is fighting jihadists who have overrun swathes of Iraq.
A car bomb ripped through a crowded Baghdad intersection during morning rush hour on Tuesday, killing 10 people.
Families who once fled a Turkish crackdown on Kurdish rebels in the 1990s after escaping from brutal jihadists, longing to return home.
EU ministers convene in Brussels on Friday in a rare summertime meeting to seek unanimous approval for the shipment of arms to Iraqi Kurds fighting Islamic State jihadists.
An international plan is under way to rescue civilians trapped by Islamic State fighters on a mountain in northern Iraq.
Britain is to transport military supplies to Kurdish forces battling militants in northern Iraq and strengthen its aid mission there
The United States and Australia agreed to take concerns about the threat posed by jihadist foreign fighters.
Pope Francis expressed "dismay and disbelief" over the violence in Iraq, calling for an "effective political solution" to a crisis.
A reporter working with Kurdish news agency Firat was killed Friday when jihadist fighters attacked a camp in Iraq.
Five bomb attacks killed at least 30 people and wounded around 70 others in several Baghdad districts.