This isn't new. This isn't a recent Syrian refugees thing. This has been going on for at least 15 years. I remember seeing documentaries about this 10 years ago, how it sucks ass to be a truck driver driving from France to the UK.
https://www.youtube.com/watch?v=P5FIsmquQqA
https://www.youtube.com/watch?v=dxcsP4vWN8Q
https://www.youtube.com/watch?v=ulxAfyoZhAM
The governments involved are so deballed that it's the truckers that get fined ridiculous amounts (2000pounds per immigrant) for anyone that manages to get on their vehicles and cross- and they're extremely clever about it.
Not to worry- the bleeding hearts here won't be happy until things are just as bad here.
BTW, can't find it right now but there are some excellent documentaries out there about the flip side of this: the people who make it across to the UK and spend their time there leeching the system, stealing, and basically being total parasites with a system that refuses to deal with them, costing the native populace a fortune. But hey- you exist for that.