[Updated] Abu Musab Al-Zarqawi has been killed in Iraq by an air strike. Reaction about the impact this will have on the insurgency is noticeably more muted than comments following the capture of Saddam.And the fact that reactions have been measured is comforting since this administration has been anything but when it comes to purported "turning" and "tipping" points in Iraq. [Perhaps I spoke too soon.]My gut feeling is that it probably won't...