(AGI) New York, Sept 25 - Tehran hopes that a definitiveagreement on nuclear power will be reached in what littlenegotiating time is left, Iranian President Hassan Rouhani saidat the United Nations on Thursday. A prerequisite for successwas for the Group 5+1 (the U.S., Russia, China, Britain andFrance plus Germany) not to put excessive pressure on thecountry, he added. In any case, the issue should be tackledwith diplomacy, and other efforts, such as military ones, wouldbe a grave mistake. . .