STUTTGART, Germany — Following President Barack Obama’s comments during a Wednesday news conference, in which he said the U.S. is no longer carrying the bulk of NATO’s military load in Libya, there has been much back and forth about what exactly the U.S. role is in Operation Unified Protector. Set against a debate about the constitutionality of the mission, the White House has defended American engagement in the campaign. The Obama administration says the scope of the U.S. engagement is limited in nature with a special focus on providing logistical support to allies, as well has suppressing Libyan air defenses...