Nope. If a member state STARTS starts or gets involved in a war, the rest of NATO is not obligated.
Furthermore, Article 5 is wildly misconstrued as obligating others to go to war.
It only obligates them as follows.
” Article 5 provides that if a NATO Ally is the victim of an armed attack, each and every other member of the Alliance will consider this act of violence as an armed attack against all members and ***will take the actions it deems necessary*** to assist the Ally attacked.
That can be sanctions, a strongly worded letter, etc.
If the Deep State of any of 32 countries manages to engineer a “Gulf of Tonkin” style incident, the terms of the NATO treaty apply.
The problem is when the Deep States and NeoCons of all the other countries are already looking for an excuse to join the war.
Disband NATO now !