Commitments in Iraq and Afghanistan leave us exposed at home, writes Hugh White. So, after nearly four years, we are back where we started in the war on terror. By the end of this year the SAS will be hunting the Taliban again in the hills of Afghanistan, as they were doing in 2001. Howard's decision, announced last week, is the right thing to do, but it carries a gloomy message about our future commitments, and some important implications for our defence force. The return of the SAS to Afghanistan marks the demise of John Howard's original strategic concept for...