Just like when the President has no frickin' clue about what to do with an issue and appoints a Presidential Commission to look into it, when the Secretary of State is a clueless blueblood who can't find his ass with both hands, he appoints a "Special Envoy".
This crew will demonize Israel right up until the first Iranian nuke detonates over Tel Aviv, and even then they would insist that the Israelis asked for it.