Turkey could even deny use of its territory in an Article 5 case (mutual self-defense).Swerve, of course Turkey cant refuse NATO access to its airfields - as ALL NATO decisions are taken unanimously, so it would be paradox if Turkey denied that.
"will assist the Party or Parties so attacked by taking forthwith, individually and in concert with the other Parties, such action as it deems necessary"
Besides which to trigger an Article 5, any armed attack would have to occur on NATO territory (north of the Tropic of Cancer) or against ships or aircraft in the North Atlantic.
Actually, Germany has been doing just that throughout the former Soviet Union for the past 15 years, to anyone who can even remotely claim to have German ancestors. Triggering an immigration of over 2 million people (socalled Spätaussiedler) from these territories into Germany since 1993, with an estimated 800,000 people with the "right" to a German passport remaining in Russia.OTH, Germany or Poland may start issuing their passports to the residents of Kaliningrad anclave- what would Russia say then?