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In your opinion, what is an “acceptable level of violence” in Iraq in order for the US involvement to be considered “successful”?
In my opinion, an acceptable level of violence would be when the violence does not threaten the stability of the democratically elected government of Iraq.
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Per the terms specified in the clip (violence, oil, electricity, etc.), how long (realistically) will it take for Iraq to “succeed”?
I don't know. It depends on whether the people can survive the interference of tribal and religious factions wishing to destabilize their nation. I hope it will be a quick process once the 'snow ball' really gets underway but I fear the heat of Iraq's balkanisation may yet melt any chance of a long term peace (I'm thinking of Northern Ireland, Beirut and Bosnia as examples of what happens when sectarian violence gets the upper hand).
Some how I don't think the USA has the strength of will to remain in a violent Iraq for many years. As soon as GW Bush is replaced an excuse will be found to bail out. I would therefore hope the USA has the strength of will to at least support the process of building up Iraq's democracy in the mean time and stop complaining about Iraq as if the problem is simply going to go away.
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Was this very short overseas visit necessary, considering what it must have cost the American taxpayers?
Yes. It is necessary for the American leadership to affirm its commitment to those Iraqi politicians who are risking their lives (and the lives of their families) to establish democratic rule in Iraq.
That the USA must bear the costs of this is an unfortunate, but necessary, aspect of the post cold war legacy. The cold hard truth is, America has a debt of responsibility to Iraq for the years it supported Saddam Hussein. This is an unfortunate tragedy for those who are killed in the mean time, be they soldiers or civilians, but unfortunately, whilst evil ideology stills stalks this planet, then freedom must be fought for.