Canadian expert Rafal Rohozynsky claims that the Islamic State has already recruited thousands of Central Asian nationals.
US President Barack Obama called his Turkish counterpart Recep Tayyip Erdogan and they pledged to step up the fight against the Islamic State group in Syria.
A Kurdish woman fighter is leading the battle against Islamic State jihadists in the Syrian battleground town of Kobane.
The White House denied it was planning to create a safe haven along Turkey's border with Syria.
Turkish Prime Minister said no one has the right to criticise Ankara on Syria, after US Vice President accused Turkey of financing and even arming jihadists.
Turkey warned it would not hesitate to strike back at Islamic State jihadists if they attacked Turkish troops stationed at Ankara's exclave inside Syria.
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.
Turkey deployed tanks and armoured vehicles to reinforce its border with Syria amid escalating violence by the Islamic State group.
US aircraft were flying "near continuous" bombing raids against Islamic State militants in Syria.
Islamic State militants closed in on Syria's third-largest Kurdish town as tens of thousands fled in terror across the border into Turkey.
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.
French President Francois Hollande said that "France does not pay ransoms" for hostages, nor does it exchange prisoners.
Barack Obama and US lawmakers ratcheted up the pressure on the IS, the president declaring there was no hiding place for the jihadists.
According to some open Syrian sources, the Islamists troops comprise around 250 Kazakhstan-born, 100 Kyrgyzstan-born, 190 Tajikistan-born, 500 Uzbekistan-born and around 360 Turkmenistan-born militants.
Francois Hollande said there was "no time to lose" in fighting jihadists in Iraq and called for a total backing for moderate rebels in Syria.
The UN Security Council condemned the "heinous and cowardly murder" of British aid worker David Haines by an Islamic State militant.
The family of James Foley, the US reporter murdered by Islamist militants in Syria, launched a foundation in his name to support kidnap victims.
The White House declared the United States was at war with Islamic State radicals, seeking to rub out another semantic flap over its Syria policy.
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.
- Central Asia
- Asia Pacific
- White House
- Vice president
- Barack Obama
- Great Britain