November 20 -- France took European allies to task after investigations exposed serious security flaws that may be partly to blame for the country’s worst attack on home soil since World War II. An increasing body of evidence shows an intelligence breakdown may have allowed a well-flagged jihadi free to roam the continent. Cazeneuve highlighted how Abdelhamid Abaaoud, the suspected architect of the attacks killed in a police raid on Wednesday, had been implicated in four of six attacks foiled by French forces since January.