With the conflict in Syria showing no signs of letting up, Turkey is increasingly worried that the civil war might spill over the border.

This year, NATO sent six Patriot missile batteries to southern Turkey to intercept any missiles that may stray into the country.

But Ankara wants more. It has repeatedly called for a NATO to send troops into Syria to secure stockpiles of chemical weapons.

Al Jazeera's Hashem Ahelbarra reports from Istanbul.