Washington, Feb 10 : The United States has revised plans to withdraw troops from Afghanistan until President Hamid Karzai leaves office before completing a security pact and settling on a post-2014 U. S. troop presence.

The move comes after frustrations about prospects of getting Afghan President Hamid Karzai to sign a long-term security deal.

A senior U. S. official said if Karzai is not going to be part of the solution, the US has to have a way to get past him.

According to the Huffington Post, the United States would like to leave more than 10,000 troops in Afghanistan for counter terrorism and training of Afghan forces after U. S. forces formally withdraw at the end of 2014.

But Karzai has refused to sign a bilateral security agreement that Washington insists must be approved, the report said.

The White House said in the absence of a bilateral agreement, all U. S. forces will withdraw at the end of the year, and that a decision by Karzai is needed within weeks

NATO chief Anders Fogh Rasmussen said earlier this month that Karzai was unlikely to sign a pact and would probably leave the choice for his successor, the report added. (ANI)