Afghanistan: United States gives Afghanistan year-end deadline for crucial security deal --- (Reuters) - President Hamid Karzai triggered uncertainty about a vital security pact with the United States on Thursday by saying it should not be signed until after Afghanistan's presidential election next April, prompting the White House to insist on a year-end deadline. -- Without an accord on the Bilateral Security Agreement (BSA), the United States says it could pull out all its troops at the end of 2014 and leave Afghan forces to fight the Taliban insurgency on their own. -- A senior Afghan official, speaking on condition of anonymity, said Karzai intended to leave the pact unsigned until he is sure the international community will not interfere in the election. Karzai's spokesman, Aimal Faizi, confirmed that, adding that the grand assembly and parliament also had to approve the pact. -- A senior Afghan official, speaking on condition of anonymity, said Karzai intended to leave the pact unsigned until he is sure the international community will not interfere in the election. Karzai's spokesman, Aimal Faizi, confirmed that, adding that the grand assembly and parliament also had to approve the pact.