Reacting to DRDO scientist Dr K Santhanam's contention that the 1998 Pokhran II tests were not successful, PM Manmohan Singh today backed APJ Abdul Kalam saying the former president had already clarified that the tests were totally successful. * Pokhran II nuclear test: WAS IT A FAILURE?
It was a successful test as India had faced sanctions from USA etc.
Had it been a gimmick, USA etc would not have imposed sanctions on India.
Over & above, when a person of dignity like Dr. Kalam is saying that the test was a success, I do not forsee any reason to not trust him.