Numbering over 22 million, the Kurds are one of the largest non-state nations in the world. Their homeland, Kurdistan, has been forcibly divided and lies mostly within the present-day borders of Turkey, Iraq and Iran, with smaller parts in Syria, Armenia and Azerbaijan. The greatest number of Kurds today still live in Kurdistan, though a large Kurdish diaspora has developed in this century, especially in the main cities of Turkey and Iran and more recently in Europe as well. Between 10 and 12 million Kurds live in Turkey, where they comprise about 20 percent of the population. Between 5 and 6 million live in Iran, accounting for close to 10 percent of the population. Kurds in Iraq number more than 4 million, and comprise about 23 percent of the population.