We are on the offensive every day but it isn't the crude and ineffective dropping of bombs or shooting up villages. A global effort to unhinge liberty and replace it wiht a caliphate isn't defeated by a traditional show of arms. It is slowly and deliberately dismantled by isolating the radicals from the general populace, and then they are snared in traps of their own making.
Read Boyds writings on the OODA loop and the blog called Global Guerrillas
http://globalguerrillas.typepad.com/globalguerrillas/2004/11/counterinsurgen.html
Thanks for the link