CNN Erin Burnett OutFront December 17, 2015 00:31:00
>> the old program covered 20 to 30% to search for terrorists, the new program covers nearly 100%. that gives us greater ability to stop acts of terrorism. >> reporter: exchanges that highlighted the pair's different approaches to defense issues. rubio favors more u.s. intervention and is committed to syrian president bashar al assad. >> we're the most powerful nation in the world. we need to begin to act like it again. >> cruz wants less intervention ov overseas. >> if we topple assad, the effect will be isis will topple serious. >> reporter: with the iowa caucuses less than seven weeks away,...
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