Not the same difference at all. Two very different things with huge implications.
The question still remains: Does the OT justify the "Just War Doctrine."
Many times now I have addressed this and if even one person talked about it, I missed it. The OT wars were always about cleansing. About removing the evil that could and would infect the people and turn them away from God. This then would be our criteria for a just war. Note just war not being the same thing as all other military involvement is evil, but only dealing right now with the issue of just war. Now here is where the difference between a change in the law and a fulfillment of the law comes in. If the law changed, then the OT can be disregarded as nothing more than history. But if the law was fulfilled by Christ as the bible indicates, then the law has not changed at all, and instead, the law is adapted to our modern lives. Thus a just war does not necessarily mean go out and blow up anyone who is evil, but rather that we need to guard ourselves against those that could poison us against God, being harsh where we need to be. Let's see, church disipline is a great example, we go through the "rules of order" and if the issue is not resolved, we treat them as unbelievers. The idea of just war thus intact.
Besides, the way the Hebrews conducted war back then clearly violates the current doctrine;
In what way?
so using the OT to justify current violence is tenuous, if not out-right absurd.
Now what I don't understand is that I think it pretty clear that justifyable war and political wars are not necessarily the same thing, though they might be. So why insist that they be lumped together like a badge of correctness that war is wrong. The Christian is always in a war, a war with old self (man) and well as evil. Thus even in the NT we see this concept of war. There can be no other understanding that I can fathom other than a justifyable war when we are told in the NT that we are in a war.
Acts 4:17
New International Version (NIV) Copyright © 1973, 1978, 1984 by
International Bible Society
17But to stop this thing from spreading any further among the people, we must warn these men to speak no longer to anyone in this name."
Romans 7:21-25
21So I find this law at work: When I want to do good, evil is right there with me. 22For in my inner being I delight in God's law; 23but I see another law at work in the members of my body, waging war against the law of my mind and making me a prisoner of the law of sin at work within my members. 24What a wretched man I am! Who will rescue me from this body of death? 25Thanks be to God—through Jesus Christ our Lord!
So then, I myself in my mind am a slave to God's law, but in the sinful nature a slave to the law of sin.
2 Corinthians 10:3
New International Version (NIV) Copyright © 1973, 1978, 1984 by
International Bible Society
3For though we live in the world, we do not wage war as the world does.
1 Peter 2:11
New International Version (NIV) Copyright © 1973, 1978, 1984 by
International Bible Society
11Dear friends, I urge you, as aliens and strangers in the world, to abstain from sinful desires, which war against your soul.
Revelation 12:17
New International Version (NIV) Copyright © 1973, 1978, 1984 by
International Bible Society
17Then the dragon was enraged at the woman and went off to make war against the rest of her offspring—those who obey God's commandments and hold to the testimony of Jesus.
Revelation 19:11
New International Version (NIV) Copyright © 1973, 1978, 1984 by
International Bible Society
11I saw heaven standing open and there before me was a white horse, whose rider is called Faithful and True. With justice he judges and makes war.
Ephesians 6:12
King James Version (KJV) Public Domain
12For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places
That's just a beginning.