Amsterdam, Netherlands (CNN) -- The problem has become so complicated, that perhaps only a child can solve it.

CNN: Europe's pain is coming America's way

Radio Netherlands and Amsterdam University are refining a proposal for an early-warning system that would pick up hate-speech broadcasts, including cryptic ones, and at least mitigate their effects.

ECONOMIST: Silencing murderous messages is not as easy as it sounds

Five more pages of the Diary of Anne Frank - the Jewish girl who hid from the Nazis in an Amsterdam house during World War II - have been found by researchers in the Netherlands.

BBC: News | Europe | New Anne Frank Diary pages found

The added security measures were implemented after 23-year-old Umar Farouk AbdulMutallab tried to set off a bomb aboard a Northwest Airlines flight from Amsterdam, Netherlands, to Detroit, Michigan, on Christmas.

CNN: TSA extends expanded airline security