The White House on Thursday, in no uncertain terms, put the onus on the Iraqis to fight and defeat the Islamic State -- even as a new report warned foreign fighters are flocking to the battlefield at a historic and dangerous pace. "The United States is not going to be responsible for securing the security situation inside of Iraq," Press Secretary Josh Earnest told Fox News. Earnest defended the administration's strategy, amid growing concerns about gains made by ISIS fighters in both Iraq and Syria. Earnest said the effort would take a "sustained commitment," but stressed that the U.S. will...