The French housing estates hit by a wave of riots a year ago could once again descend into violence, an intelligence report has warned. The conditions that led to the 2005 unrest are still in place, it says. The warning comes just days before the anniversary of the first riots, following the death of two youths in an estate north-east of Paris. Recent weeks have seen a rise in clashes between police and youths in the capital's immigrant suburbs. The report by the intelligence agency of the interior ministry, dated 11 October, was leaked to the Figaro newspaper. The BBC's...