The migrants are a problem themselves. Terrorists will not destroy any Western nation yet, but the migrants will. Migrants who hate their host countries will destroy them, either by changing them, or dissolving them. We don’t need an overblown terror threat to show why unfettered immigration is deadly to the West.
Don’t see why the terrorists wouldn’t infiltrate Europe this way. It has worked really, really well for them here in the USA.
Refusal to assimilate AND the MSM/Liberal agenda encouraging them in their refusal to assimilate