What you think that India is going to test the nuclear bomb immidiately after all this considarable investments? At present their is no need for another test after Pokharan 2. Further if in future our scientists needs another test , till that time we will be having our own technology. Or may be another source of energy? But today we need the enegry, and if we will start it today it will take another 7/8 years to complite.