Turkey returns fire after shelling from Syria

Another mortar shell from Syria struck Turkish territory today, prompting a fourth straight day of retaliatory artillery fire, and reviving fears that the crisis in Syria could spiral into a regional conflict.

The latest shelling comes a day after Turkish prime minister Recep Tayyip Erdogan called on Syria not to test Turkey’s “limits and determination” and insisted that his country “was not bluffing” with its warnings.