It's evidence of how tense the situation has grown along the Turkish border of war ravaged Syria. But early indications are a major escalation won't result.
The US is wading into ever murkier waters in Syria with unpredictable consequences.
According to The New York Times, the CIA is helping to vet Syrian rebel groups for arms shipments paid for by Turkey, Saudi Arabia, and Qatar.
Tunisia, home to the Arab world's first successful uprising against a dictator, erupted this week with a battle between radical Islamists and the moderate Islamic party that dominates government. A second revolution, one within Islam that can reconcile it with democracy, will again help the Middle East.