Migration is part of the doctrine of jihad. Migration is so important that the Islamic calendar is based upon the Hijra, Mohammed’s migration from Mecca to Medina. Why? Because it was migration that lead to the creation of jihad in Medina. And it was jihad that made Islam triumphant.
In the past Muslims tended to stay in Islamic countries. Today, the new politics is to migrate to Kafir lands and immerse themselves in local politics. This is the jihad of money, writing and speech. Their politics is to bring the Sharia to Kafir culture. An example is using Islamic money is to build departments in universities that will support Sharia and never criticize Islam.