Well, if you look at the situation the world is in today, and you cannot see that because we have, for eight years, turned a blind eye to War, and the death that has brought about, then you simply aren't paying attention.
I doubt seriously you have been run out of your own home, had to flee to another country in order to survive, struggled, after you have done that...to survive, had your family and friends murdered, or been murdered because you were a Christian instead of a Muslim.
"Needless" is subjective, and when you sit in the comfort of a Country where you are free to worship God as you choose, and speak your mind as you choose...
...it's really quite easy to sit around and armchair diagnose what is needless or not.
I am a supporter of the world working as God has said it will:
Romans 13
King James Version (KJV)
1 Let every soul be subject unto the higher powers. For there is no power but of God: the powers that be are ordained of God.
2 Whosoever therefore resisteth the power, resisteth the ordinance of God: and they that resist shall receive to themselves damnation.
3 For rulers are not a terror to good works, but to the evil. Wilt thou then not be afraid of the power? do that which is good, and thou shalt have praise of the same:
4 For he is the minister of God to thee for good. But if thou do that which is evil, be afraid; for he beareth not the sword in vain: for he is the minister of God, a revenger to execute wrath upon him that doeth evil.
There is never anything "needless" about defending those who cannot defend themselves.
God bless.