allen dershowitz joins us. ns us. >> civilians in yemen are rallying to fight houthi's ally, ali abdullah saleh. hashem ahelbarra has the story. >> now, they have been recruited to join yemen's new army. the country's military is known for being divided along tribal and sectarian lines. some of these trainees were forced to retire under former president saleh, under his administration there was inherent mistrust of people from southern yemen. a fear they might form a break away state. >> translator: we formed this battalion a few weeks ago, right after we defeated houthi fighters and pushed them out of the southern cities. there are 4700 soldiers, who fought off the invaders. >> exiled president hadi's return to power depends on an army that is loyal to him. a province on yemen's border with saudi arabia. some of those, had links with the houthis, thousand they are switching sides, they are joining with government forces to recapture the province of saada. >> we are making preparations to start a military campa