Why didn't Britain, France & Russia object India on the successful test of Pokhran-II?
France & Russia: Because of the arms trade.
Britain: If arms trade was insignificant, 2.3% of UK's population are of Indian origin.
India was and still one of the biggest(if not the biggest) importer of arms from those three countries.
According to SIPRI, India received the following arms from France, UK, and Russia from 1993 to 2003:
