The Obama administration has warned Afghan President Hamid Karzai over his plan to delay signing of a security pact that would preserve a long-term U.S. occupation. In Kabul, National Security Adviser Susan Rice personally delivered an ultimatum Monday that U.S. troops could fully withdraw in 2014 if Karzai does not add his signature before the end of the year. A council of elders approved the U.S.-Afghan pact, but now Karzai is seeking to continue negotiations. According to a spokesperson, Karzai wants an end to U.S. raids on Afghan homes as well as the release of all prisoners from Guantánamo Bay.