US may pull out all troops from Afghanistan

Al-Jazeera.com :
The US president, Barack Obama, has told his Afghan counterpart Hamid Karzai that he is preparing a contingency plan to withdraw all US troops, as a post-2014 security pact remains unsigned.
The message, delivered on Tuesday, however did not rule out making a deal on a post-2014 mission with the next Kabul government.
Obama told Karzai by telephone that the Pentagon had little option but to draw up a contingency plan for a full withdrawal because the Afghan leader had refused to sign a Bilateral Security
 Agreement with Washington.
“Specifically, President Obama has asked the Pentagon to ensure that it has adequate plans in place to accomplish an orderly withdrawal by the end of the year,” the White House was quoted as saying by Reuters.
The US has been pushing for legal immunity for its soldiers and contractors, a point resisted by Karzai.