What is a Just War?

I'm glad to have found St Thomas Aquinas' Conditions for a Just War which I first remembered encountering during the first U.S. vs. Iraq War baci in '90 and '91. At the time I wanted to go on the record as being a concious objector, simply put my religon had to all for concious objection and I had to be on record with some leader of my religon that I was one. Being Roman Catholic concious objection is allowed if the War was an Unjust War as defined by the above link.