Karzai tells Susan Rice of more demands for accord extending U.S. troop presence --- KABUL — Efforts by the United States and Afghanistan to finalize a long-term security arrangement appeared on the brink of collapse Monday as Afghan President Hamid Karzai made a new set of demands, and the Obama administration said it would be forced to begin planning for a complete withdrawal of U.S. forces at the end of 2014 -- .In a two-hour meeting here, Susan E. Rice, President Obama’s top national security adviser, told Karzai that if he failed to sign the bilateral security agreement by the end of this year, the United States would have “no choice” but to prepare for withdrawal, according to a statement by the National Security Council in Washington. -- Washingtonpost