11.   The union has also warned it might escalate its campaign if necessary.

12.   Islamic militants in Algeria have escalated a campaign of assassinations even as religious and secular opposition movements makes peace proposals to the military-backed government.

13.   The two recent mainland blasts have raised fears that Corsican separatists are set to escalate their campaign of violence.

14.   Kavkaz Center also reported Russian pillaging of villages in southern Chechnya as federal authorities escalated their campaign.