America trapped..!

I visited BBC news site this morning and came to know that war officials are worried about withdrawal of British forces from Afghanistan. British Prime minister earlier this month announced the withdrawal of 500 troops. Now the first thing that comes to my mind after reading this news is that America is so worried about this cut down of British troops. They strongly believe that "it would dangerously weaken the remaining forces". Its very obvious that America lost the war here. What do you think? its true because American soldiers are there and due to this continuous withdrawal of International forces from Afghanistan, their lives are getting less secured day bay day. It may create a big problem in their withdrawal.