Turkish patience is running out with Syria, and the country's Prime Minister has issued what's being interpreted as a threat of war.
It's comes after the downing by Syria of a Turkish air force jet in what Turkey insists was international air space.
The Turkish Prime Minister's told Syria not to misinterpret Turkey's calm exterior, and to expect retaliation if Syrian helicopters again stray into its air space.
CNN's Ivan Watson says the Turks have been very critical of Syrian human rights abuses, but so far haven't moved against them.
"But this fighter jet shoot down is being viewed as an entirely separate bilateral issue. It is now between Syria and Turkey, not Turkey sympathizing with rebels or opposition members and Turkey will deal with that as a new bilateral issue in a new paradigm now."
NATO ambassadors from 28 states have met to discuss the incident but won't act.