Hypothetically, imagine an EU army sparking a conflict between Greece and Turkey which drags in Russia, and then invoking Article 5.
Greece and Turkey are currently both NATO members. What prevents them from going at eachother? I’d say NATO membership and Turkey’s dependence on EU trade
Russia and Turkey aren’t actually good mates.
So I probably don’t understand what you mean exactly...
I have been in Afghanistan under NATO/ ISAF because of 9/11. Justified? Absolutely not imho. Still in favour of NATO though. But Europe / EU should not rely on NATO alone.
Russia has attacked Turkey’s troops last year. I’d say there is bigger risk of sparking a conflict right there.