I feel so bad for them, and I know the US is a big cause of it. I know we want to be a strong nation, and proud of our country, but not at the expense of others who never did us harm.
Since Hungary has closed their border, migrants circumventing through Croatia will encounter thousands of landmines on the Hungarian-Croatian border left over from the Balkan Wars of the '90's.
Migrate, accordingly..........
The biggest threat which is almost certainly happening is that among these millions of people - mainly comprised of fit young men - are potential terrorists.
ISIS has been reported as organizing terrorists recruits to infiltrate into the host countries.
Apart from the threat of terrorism, the once great culture of Europe, which gave the world so much is already being destroyed by the barbarian horde.