In his answer on the 14 April letter from Ariel Sharon, Bush took some distance from this principle. He said ""In light of new realities on the ground, including already existing major Israeli population centers, it is unrealistic that the outcome of final status negotiations will be a full and complete return to the armistice lines of 1949 ... It is realistic to expect that any final status agreement will only be achieved on the basis of mutually agreed changes "that reflect these realities".