'I can announce that America will lead a broad coalition to roll back this terrorist threat,' Obama will say in the evening address, in a preview of the speech released by the White House. 'Our objective is clear: we will degrade, and ultimately destroy, ISIL through a comprehensive and sustained counter-terrorism strategy.' That campaign, the president will say, 'will be waged through a steady, relentless effort to take out ISIL wherever they exist.'
