TAIZ, Yemen, Sept 14 (Reuters) - As Yemen's Iran-alignedHouthi militants swept through the battered country's Red Sea coastline, thousands of panicked people fled to makeshift camps,adding to an already vast population of internally displaced people.Aisha Muhammad, like others who escaped from coastal areas and arrivedin the southwest province of Taiz, left behind her two daughters and three sons,trapped in their homes as fighting turned a once-vital corridor for trade into a route of displacement.

More than 900 people have been killed or injured and at least 5,000 families have fled their homes in less than a week.

More than 46,000 people have been forced to flee their homes in Yemen in the past week as a rapid Houthi offensive along the Red Sea coast threatens to push the country back into…