18 May 1974
India conducted its first nuclear detonation, described by India as a “peaceful nuclear explosion,” on 18 May 1974.
Then came sanctions and in 1975 Emergency. 3 years under emergency. Indira lost power in an election.
Sanctions had their effect but lasted for a few years.
Russia will have a short-term squeeze but the rest depends upon its citizens.
That certainly doesn’t verify all the claims you have made about the sanctions.