I forgot that this thread was re-opened.
Then if you can decide on a situational basis, you give the leader of our country the power to decide on a situational basis, something he exercised.
While I think the decision is situational that does not mean that any situation will suffice. When considering whether it is prudent to drink you must take the situation into account. That doesn't mean people can act irresponsibly and drink right after major surgery while driving 70 miles per hour on the freeway. That was the wrong situation to start drinking.
And, I have never conferred such powers to the president.
Unless you say that all wars fought over religious doctrinal disuputes are bad.
See, you asked me originally to tell you when a country should go to war. You didn't ask when a country shouldn't go to war. There are an infinite number of reasons not to go to war, like for example religious reasons.