Ukraine is acting like a member of NATO even though it’s not a member of NATO. From Rick Rozoff at antiwar.com:
Colonel-General Ruslan Khomchak, the commander-in-chief of Ukraine’s armed forces, is quoted today as boasting that his nation’s military is capable of responding to what he deemed the “aggravation of the situation” in the Donbass, in his words the temporarily occupied territory of Donetsk and Lugansk, and “along the entire Ukrainian-Russian border.”
The above regions are only two of five Ukrainian (or former Ukrainian) oblasts bordering Russia. The total land border between Ukraine and Russia as Ukraine computes it is some 1,225 miles; Russia’s border with Donetsk and Lugansk is 255 miles.
The Ukrainian military chief has extended the line of conflict by almost five times. In language evocative of the worst days of the Cold War, Khomchak also intoned: “Ukraine is supported by the entire civilized world. We are not alone in the face of the enemy.”
Article 5 does NOT commit anyone to the provision of military support.