I don’t generally subscribe to this perspective. What is the foundation for this belief?
I am not completely sure what you mean by this.
I think when there is a threat to the country, the government, with perhaps the military, should respond appropriately.
There once was a philosophy that we did not engage in wars unless we had a vital interest. It appears to me that the interest we have in Ukraine is the weakening of Russia. I don’t see any other real interest.
And, then, Russia seemed less than impressive. So, as we balance the interests, risks, and costs, a never ending war, even from the most callous view of the value of life, does not seem in our interest.