We have tested on two occassions and the gap between the two was 24 years. The last test was in 1998. If there is no abrupt change in our neighbourhood, we may assume that the next test will occur after a gap of 15 years or so. During this 15 years, how much benefit will accrue and what will be the status of India in the internarional arena - these factors are also needed to be analysed. Mind you, America's only interest to give us freedom in the area of civil nuclear energy is to have our friendship to contain China and help US in conflicts with Middle Eastern countries. Whether we are prepared for that - this is big question to be answered. I cannot comment on this with my limited knowledge; but one thing I know and that is, "if you want to get something, you have to give something". There is no free lunch in this world.