A while ago I wrote a series of posts “Thoughts on War.” It mainly involved an on going conversation with Brian (glad to have you back).
Below is a brief take of mine on the famously referenced Romans 13 from, Let the discussion begin:

“Everyone must submit himself to the governing authorities, for there is no authority except that which God has established. The authorities that exist have been established by God.”
This is the first verse of the primary passage I hear cited in reference to why we should support the war. The argument I think is that quite simply God has put our president in place and therefore if our governing authorities call for something we should submit (support) it. To a large degree I find no disagreement with this argument. The struggle with this type of thinking for me comes when I start to think about who “Everyone” entails. That means an Iraqi Christian, if called to join the armed forces under Saddam, should join, and support the cause of the governing authority above him. That means the Nazi German soldier’s where simply following this same Scriptural reasoning when they begin killing the Jews. That means if the authorities in this country have deemed abortion as an acceptable practice, Christians should stop protesting Abortion Clinics and instead should be supporting them.

What followed (and preceded) was an ongoing discussion entitled, Thoughts on War.