Western military leaders will meet Tuesday at NATO headquarters in Brussels, Belgium, to huddle with Turkey over the downing of one of its military jets by Syria.
The "consultations" are being held at Turkey's request under Article 4 of the North Atlantic Treaty Organization's founding charter.
"Under Article 4, any ally can request consultations whenever, in the opinion of any of them, their territorial integrity, political independence or security is threatened," NATO spokeswoman Oana Lungescu said in an email to CNN.
During the consultations, there is a chance Turkey will demand a collective military response.
The notion comes from Article 5 of NATO's founding Washington Treaty, which states that should a member nation - such as Turkey - be attacked, each member will assist the party under attack by taking "such action as it deems necessary, including the use of armed force, to restore and maintain the security of the North Atlantic area."
Article 5 has been invoked just once since NATO's founding: the military response to the terrorist attacks of September 11, 2001.FULL STORY