-Migration flows at the national, regional and international levels (from South to North and South to South) and their implications for socio-economic and environmental sustainability as well as political processes. -Growing phenomenon of 'climate refugees' from the Global South and its challenges for sustainability and domestic politics in countries of the North; the impact of migration on the emergence and acceleration of populism. -The socio-economic impact of the pandemic, political conflicts and other dimensions of migration flows and policies.