Yemen's Shia Houthi fighters are becoming a political and military force to be reckoned with.
The group was originally a small faction based in the northern town of Saada.
But now it is running a huge and heavily-armed rebellion taking over new territories in the south. They are strongly opposed to a proposed division of the country into six regions.
Al Jazeera's Mohammed Vall reports from Sanaa.
Source: Al Jazeera