Who let in the parents of this child wanna-be bomber?

Lessons for multiculturalists. One: you import not just a people but their culture. Two: you can't screen  the future children of Muslim immigrants.

And so:

A German-Iraqi boy aged 12 is being investigated for trying to detonate a nail bomb at a Christmas market under the direction of Islamic State.

The boy, who was born in Ludwigshafen in 2004, was said to have been “strongly religiously radicalised” and apparently made the device himself, concealing it in a backpack.

He apparently retrieved the bag after the bomb failed to detonate and, nine days later, on December 5, put it in a bush outside the town hall in the western town, where it was spotted by a passer-by. Police closed the area to the public while bomb disposal officers defused the device, which was later found to be incapable of exploding...

The magazine Focus said that the boy came to the attention of the authorities during the summer when he tried to leave Germany to join Isis in Syria. He was detained and placed in a youth centre.

Who let in his parents?