 Complete the following phrase:  India has the largest diaspora population in the world, and many live in Australia. Non resident Indians NRI and Persons of Indian Origin PIO maintain strong cultural and economic links with India. However, the Constitution of India does not allow dual citizenship, so for many expatriates taking up residency, and eventually citizenship in Australian, this has led to loss of privileges in India, such as residency rights. India is one of the few remaining countries that prevent dual citizenship, and there have been attempts to resolve this, through Long Term Visas and more recently a pseudo citizenship Overseas Citizenship of India OCI has been created that has been taken up positively, with many Australians OCIs, cricketer Shaun Tait being a famous example, who are able to take residency in India without applying for a visa. However privileges of OCI holders depends on the Government policy of the day, and there have been instances where they have been denied additional rights afforded to full Indian citizens, such as during the 