...Gen. Jack Keane and Sen. Tom Cotton, R-Ark., are considered the frontrunners to replace Mattis...For Trump to nominate Keane, however, he would have to swallow Keane’s hawkish stance...and his recent criticism of the move to pull out of Syria, which the retired general called a “huge strategic mistake." “Clearly, we're repeating the Obama mistake of premature withdrawal, which got us ISIS,” Keane said on Fox News’ “America's Newsroom” on Thursday. “In my judgment, we need to stick to it and finish the job,” Keane added, noting that the withdrawal of American troops will give “a victory of strategic proportions” to...