After decades of guerilla conflict in Afghanistan, its intensity is pretty low. So, although Karzai will inevitably fall without Western support, he does not need much troops to play his role of pro-US/UK stooge warlord.
In Iraq, situation is different. This is still a relatively fresh conflict, its intensity is pretty high. So, huge numbers of US/UK troops are needed to keep local stooges in place. However, the number of British troops in Iraq is relatively small.
In this situation, neocons can afford to make Blair a favor and use their local clients to make noises about possible UK withdrawal from Iraq. What is the exact meaning of these noises, is a hard question. Most likely, their only purpose is to make the Brits happy, but, in principle, certain reduction of the UK presence in Iraq is possible. Let us wait and see what will happen next.
Simon Jenkins. Blair should stop playing fall guy in Rumsfeld's war games:
http://www.guardian.co.uk/Columnists/Column/0,5673,1643584,00.htmlBritain is throwing up a stooge's smokescreen to cover US withdrawal from Afghanistan. There is no need for such folly in Iraq
...the occupation has injected the poison of insurgency into both Sunni and Shia areas. They will get tougher the longer the occupation continues. By late next year, one intelligence analyst told me, "We may as well negotiate an exit strategy direct with Tehran".
The default mode of American foreign policy is isolation and of British policy continued intervention. America is shrewdly retreating from Afghanistan, knowing that the place is heading for trouble. Britain is the fall guy. Will the same happen in Iraq?