Turkish President Abdullah Gul said on Monday the “worst-case scenarios” were now playing out in Syria and Turkey would do everything necessary to protect itself, as its army fired back for a sixth day after a shell from Syria flew over the border…

NATO member Turkey was once an ally of Syrian President Bashar Assad but turned against him after his violent response to an uprising in which, according to the United Nations, more than 30,000 people have died.

“From now on, every attack on us will be responded to immediately. Every attack that targets our sovereignty, our security of life and property will find its response,” Turkish government spokesman Bulent Arinc said after a cabinet meeting.