The Channel tunnel has been targeted by a group of Islamic militant terrorists aiming to cause maximum carnage during the holiday season, according to French and American secret services. The plan, which the French DGSE foreign intelligence service became aware of earlier this year, is revealed in a secret report to the French government on threat levels. The report, dated December 19, indicates that the tip-off came from the American CIA. British and French intelligence agencies have run a series of checks of the security system protecting the 31-mile tunnel but the threat level, the DGSE warns, remains high. British...