tanks about 20 miles from the border. joining me now is the former u.s. ambassador to yemen. what are you hearing about saudi tanks that may be on their way, troops that are trying to weed out these hoiuthi rebels. a lot of saber rattling and i would be very surprised and very concerned if they were to actually seriously try to mount a ground operation in yemen, it s very difficult inhospitable ter train, and they have a comit of a scuffle with the houthis at the end of 2009