How It Happened In London

The Wall Street Journal's Europe Report ran an interesting story this morning, detailing the struggles Europe faces in counterterrorism. The synopsis is, the desire for maximum civil liberties conflicts with the desire for maximum security. European nations still have dramatically different legal codes - recall the difference between civil and common law, one based on the Napoleonic Code and the other on centuries of British verdicts - but they have all opened their borders to each other and allowed for virtually free passage between nation-states.

The result is that "insiders" with affiliations to Al-Qaeda or other international terrorist groups can travel virtually uninhibited throughout the continent, and of course Britain.

What is to be done?