This article makes a very clear explanation of why the surge was necessary.
There is need for a political solution in Iraq. That does not preclude the need for security in Iraq. And from where we are today, US and coalition forces are the best choice to provide that security. I think John McCain was quite correct when he told the US Senate, “…you have no idea how much worse things could get…”
The primary concern in Congress is not the soldiers and their families. It is not the Iraqi people. The primary concern in Congress today is capitalization on American’s frustration with the war in Iraq for political gain. While the United States military is trying to execute a war, the American Congress in campaigning for the next election.