Republican presidential candidate Sen. Ted Cruz (R-TX)97% ratcheted up his attack on fellow contender Sen. Marco Rubio (R-FL)79% Monday by comparing his foreign policy worldview to that of President Barack Obama and former Secretary of State Hillary Clinton. During a speech in New Hampshire Monday, Rubio slammed Cruz as an "isolationist" and mocked the loquacious Texas senator by noting that ISIS could not "be filibustered." Cruz told Breitbart News in an exclusive interview on his campaign bus in Iowa that he wasn't surprised by Rubio's assault. "It's not surprising that Senator Rubio, and others in the Republican field, are launching...