You started by talking about obligations; but NATO is about obligations to defend member countries, not to support whatever one or more members decide to do in non-member countries. That's why NATO is not involved in Korea, and NATO countries were not obliged to join the USA in Iraq.

Some NATO members are not going to send military help to Ukraine (eg Germany); some will send help, but not combat troops (eg USA or UK). I'm unaware of any that have declared they'll send combat troops.

So, no, I don't know what your point is about how to react to Russia, when you think saying "we are with NATO" is enough. It seems like an unwillingness to talk the problem through.