As in other Hellenistic diasporas, the Egyptian diaspora was one of choice not of imposition. Other non-national associations represent stateless populations, diasporas or micronations. Peterson's work focused on diasporas, genocides and refugees. Peoples of the World includes some diasporas and underrepresented/stateless ethnic groups. The situation faced by ethnic Russian diasporas varied widely. These hadhrami immigrants blended with their local societies unusual in the history of diasporas. Punjabis are one of the largest ethnic groups in both the Pakistani and Indian diasporas. Among the diasporas, Khalistan issue has been a divisive issue within gurdwaras. Sri Lankan, and Tibetan diasporas. There are Hindko diasporas in neighbouring countries. Information is less robust regarding diasporas in other territories. In 1911 he visited the Orthodox Albanian diasporas in Romania, Ukraine and Bulgaria. Iraqis form one of the largest diasporas in the world. Eventually, it crossed national boundaries and reached cities with Indian diasporas around the world. Ukrainians have one of the largest diasporas in the world.