Islamic State (IS) jihadists have advanced to the Syrian town of Kobane, just a few kilometres from the Turkish border yet still NATO member Ankara appears in no hurry to use force.
These are the main questions over why Turkish policy is so cautious, even as IS flags planted around Kobane are so close as to be visible from the other side of the border.
Turkey previously justified its low-key role by pointing to its concerns for Turkish hostages held by IS militants. But those hostages were freed last month, freeing Turkey's hands.
The Turkish parliament last week authorised the government to take military action against the IS extremists but so far no plans to carry out military operations have been announced, despite a build-up of Turkish forces on the border.
Ilter Turan, professor of political science at Istanbul's Bilgi University, said Turkey feared possible attacks by jihadists inside the country in retaliation for coalition airstrikes.
Any attack on the group led by Ankara would "significantly" bolster support for the jihadists in Turkey, Turan said.
Turkey is wary that military action around Kobane could bolster Syrian President Bashar al-Assad and strengthen Kurdish militants linked to Turkey's outlawed Kurdistan Workers Party (PKK), which has fought a 30-year insurgency for self-rule.
NATO-member Turkey has for years pressed for the ousting of Assad and wants the removal of Assad to remain a clear goal amid the battle against the IS.
President Recep Tayyip Erdogan has also asked the US-led coalition to establish a safe zone inside Syria to host refugees and ensure Turkey's security, an idea that may only be enforceable with foreign ground troops.
"Dropping tons of bombs from the air is only a temporary solution," Erdogan told parliament on October 1.
Some might think that Ankara would want to aid the People's Protection Units (YPG) fighters battling IS and give them the upper had in the battle.
But mindful of its own Kurdish minority, Ankara is worried a military intervention on its border could bolster the outlawed Kurdistan Workers Party (PKK) which is fighting for greater rights and autonomy in Turkey's southeast.
Kurds accuse the government of turning a blind eye to IS and refusing to allow Turkish Kurds to cross the border and fight in Syria.
Ankara also believes that the Syrian Kurds have ambiguous relations with Assad and should come out in clear opposition to him. This message was reportedly relayed this week to Syrian Kurdish leader Salih Muslim on a rare visit to Ankara.
"Right now Ankara is worried about everything that comes from Kobane: Mortar shells landing on its soil, Kurdish fighters taken to Turkish hospital, PKK fighters disguised as refugees. It's a nightmare for Turkey," Turan said.
Last week Taraf daily reported that the 49 hostages held by IS had been released in exchange for 180 jihadists, including militants held in Turkey.
Despite objections from the US, Turkey agreed to a swap deal. According to The Times of London three French nationals, two British, two Swedes, two Macedonians, one Swiss and one Belgian were among the jihadists released.
Erdogan acknowledged that Ankara had held "diplomatic and political" negotiations with the IS and no money had exchanged hands.
But Ankara bitterly rejects suggestions - most recently floated by US Vice President Joe Biden - that its policies helped encourage the rise of IS. The government insists it abhors terrorism in all forms.
The advance of IS militants in northern Syria towards the Turkish border stirred fears that a sovereign Turkish exclave inside Syrian territory might be their next target.
Erdogan has repeatedly said Turkey would strike back if the jihadists attacked Turkish troops stationed at the tomb of Suleyman Shah, the grandfather of the founder of the Ottoman dynasty Osman I. The land is considered Turkish territory under a 1920s treaty.
Turan said Turkey would most likely take action to defend its territory, but neither IS nor the Syrian regime had a "vested interest" in confronting the Turkish army - a force second only to the United States in the NATO alliance.
COMMENTS (6)
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Why should Turkey take on IS which is now ISIL and no power in the region or in the west including the USA have the mettle to confront them? Areal bombing or providing weapons to Peshmarga kurds (Germany participation) are not going to stop the ISAL phenomina which was cloned by the western powers in the first place by arming the opposition to Mr Assad? Once Kobani falls the players will try to mix the new cards.
Rex Minor
How can they do that who they first helped established. But these beasts will never help Turkey to gain on Kurds.
Turkey has played a very negative role in this conflict. It allowed thousands of terrorists to land at its airports and then cross to Syria without any hindrance. It also watched massacre of hundreds of thousands of Kurds and other minorities in its backyard and did not play any part to stop it.
This is the same country that traded 190 IS terrorist for 46 Turkish prisoners .. and then had the gall the imply that their security forces rescued them. Harsh language and chest thumping won't cleanse the guilt associated with letting 190 terrorist loose on this World. Shame on Turkey.
why should turkey want to help the syrian kurds whats turkey gonna gain from it its economy is gonna go down its civilians are going to die its wepones are going to get wasted its everything bad for turkey why so US and EU countries can get back control of there oil everyone expect to use turkey for their dirty work when palestine needed help in gaza who ran to help them when the people was getting killed in myanmar who help them the kurds say their the lions of islam if they touch kurds they touch kobani they touch fire its there mother land now go and die like a man for you mother land and stop asking for help theres been lots of wars in this world and only the brave win the kurds in turkey are more brave atleast they dont run to other boarders for help they stand there ground and die if they have to