This lecture delves into the complexities of migration and mobility dynamics in the 21st century, exploring topics such as the naturalization process in Switzerland, international migrant stock, reasons for migration, forced displacements, asylum applications in EU countries, and the history of Swiss immigration. It also discusses the sociostructural situations of the foreign population in Switzerland, the administrative reasons for entry, and the (un-)employment status of migrants. The instructor provides insights into the changing landscape of migration policies, the impact of global events on migration patterns, and the selective immigration policies adopted by Switzerland.