Some further googling led me to "totalization agreements" and then it's per country.
It looks like India (for example) may not have such an agreement, but say Austriallia has it. That to be said, it's all news to me, so might be completely wrong here
Some further googling led me to "totalization agreements" and then it's per country.
It looks like India (for example) may not have such an agreement, but say Austriallia has it. That to be said, it's all news to me, so might be completely wrong here