Dotini said:
Balderdash. As a member of NATO, Turkey cannot choose its own rules of engagement.
The guy named John Kerry happens to disagree with you.
This is an article from October 6, 2015 - before the shoot-down:
http://news.yahoo.com/turkey-warns-retaliate-air-space-violated-103607889.html?nf=1"""
NATO called on Russia to stop air strikes in Syria and warned its violation of Turkish airspace during a raid risked inflaming tensions days after Moscow's military intervention began.
Turkey also warned Moscow over further incursions after its F-16 jets intercepted a Russian fighter that flew through its airspace near the Syrian border at the weekend.
Two Turkish jets were also harassed by an unidentified MIG-29 on the Syrian border according to Turkey's army, which has the second-largest number of troops in NATO after the US.
"Our rules of engagement are clear whoever violates our airspace," Turkish Prime Minister Ahmet Davutoglu said. "The Turkish Armed Forces are clearly instructed. Even if it is a flying bird, it will be intercepted," he added, while playing down the idea of "a Turkey-Russia crisis".
...
NATO also warned against violating Turkey's airspace, saying in a statement after the meeting that the allies "note the extreme danger of such irresponsible behaviour."
US Secretary of State John Kerry said the incident had risked provoking a serious escalation.
"We're greatly concerned about it because it is precisely the kind of thing that had Turkey responded under its rights could have resulted in a shoot-down," he said.
"""
The key part is "had Turkey responded under its rights". Kerry says that Turkey has a right to shoot down intruders.