Are there cracks in the alliance between Tehran and the Houthi militia that has taken over large parts of Yemen? According to a report in the Wall Street Journal, the Houthis are seeking the expulsion of Iranian ambassador to Sanaa, Hassan Arlo. In order for this to happen, the Houthis are seeking permission from Saudi Arabia to lift the one-time flight ban and allow the flight to Tehran. This is no small matter, the Iranian "ambassador" is a senior member of the Revolutionary Guards who was smuggled into Yemen last year and is considered the most senior representative of the...