The U-S will be pulling out all its troops from Afghanistan by the end of the year if Washington and Kabul fail to sign a bilateral security agreement. The US president has asked the Pentagon to make preparations for the withdrawal in case the deal with Afghanistan is not signed. Barack Obama has also spoken to his Afghan counterpart about the withdrawal plan, and said that Washington is still open to finalizing the agreement. Hamid Karzai has so far refused to sign the controversial deal over major differences with Washington. The two sides are still at odds on some of the terms, including immunity for American troops and their attacks on Afghan villages and homes. Show Less >>