Emma Sky's interview via SWJ has this short comment on the surge:
The change in the approach of the US military during the Surge helped persuade Iraqis to shift their strategic calculus - and reinforced these positive developments. The Surge was a key factor – but it was not the only factor that brought down the violence in Iraq. It is important to recognize the impact of US military tactics, but to put this within a strategic perspective.
Link:http://www.global-politics.co.uk/blo...aq_emmasky_rt/

Captured here as her perspective as a political adviser in OEF is important.