Turkey is turning a deaf ear to insistent pressure to take a more pro-active stance in the fight against Islamic State (IS) jihadists, adding to existing strains with the West under President Recep Tayyip Erdogan.

Western diplomats have repeatedly made clear they want to see the key NATO member play a key role in the coalition against the militants, who are battling for the Syrian town Kobane just a few kilometers from Turkey.

Turkish Prime Minister Ahmet Davutoglu on Friday called for a "humanitarian" safe zone to be created in an extensive section of northern Syria to host refugees fleeing the Syrian conflict.

Turkey has called for the area, backed up by a no-fly zone, to protect its borders and provide some protection for refugees fleeing both the Syrian conflict and Islamic State militants who have seized swathes of Iraq and Syria.

U.S.-led warplanes pummelled jihadists attacking the Syrian town of Kobane Friday as the Pentagon said there was no imminent threat to Baghdad despite a wave of deadly bombings.

Six strikes hit Islamic State group positions close to the front line in the east of Kobane, taking advantage of new coordination with the town's Kurdish defenders, the Syrian Observatory for Human Rights said.

Turkey is planning to expel a group of Syrian Kurds who fled the besieged town of Kobane but were then detained for over a week on suspicion of having links to rebel Kurdish groups, a Turkish lawmaker said on Thursday.

Ibrahim Ayhan, a lawmaker for the pro-Kurdish People's Democratic Party (HDP), said the group of over 150 Kurds still being held did not want to return to Syria amid the advance by Islamic State (IS) jihadists.

The United Nations voted on Thursday to pick five new members to the Security Council, with New Zealand, Spain and Turkey locked in a tight race for seats at the world's "top table."

Angola, Venezuela and Malaysia are virtually assured to win support from the 193-nation U.N. General Assembly as they are running unopposed from their region.

U.S. warplanes struck 14 times near Kobane into Thursday, hammering the Islamic State jihadists besieging the key Syrian border town, the American military said.

Central Command said the air attacks Wednesday and Thursday "successfully struck" 19 IS-held buildings, two command posts, a heavy machine gun, three sniper positions and other targets.

Turkey's ruling party said on Thursday it was optimistic about the prospects for the peace process with Kurdish rebels after a spate of violence raised concern about its viability.

The spokesman of the ruling Justice and Development Party (AKP) Besir Atalay told reporters the government is about to complete a roadmap aimed at ending the three-decade old Kurdish insurgency.

A Moroccan man, with his two young French daughters in tow, was arrested in Casablanca Wednesday as he sought to join up with the jihadist Islamic State fighters, authorities said .

The man identified by his initials N.R., who was under police restrictions in France, was picked up at Casablanca airport, the Moroccan interior ministry said in a statement.

Turkey on Wednesday said only Syrian refugees would be allowed to cross its border to fight jihadists for the mainly Kurdish Syrian town of Kobane, rejecting calls from the West to fully open the frontier.

Prime Minister Ahmet Davutoglu told reporters that "those coming from Syria can go back to join the fight" for Kobane, but that Turkish and other nationals would not be allowed to cross the border.

Turkey's main pro-Kurdish party said Wednesday it will hold talks with Iraq-based armed Kurdish rebels and jailed militant leader Abdullah Ocalan as a deadline passed for the Turkish government to come up with a roadmap for the peace process.

The Kurdistan Workers Party (PKK), which has waged a three-decade insurgency for Kurdish self-rule in the southeast, had given the government until Wednesday to show it is serious about peace.