There are fears the Iranian proxy may attack shipping in the Red Sea, adding to global economic woes.
The Iran-backed group could bring a second crucial waterway to a standstill, writes Sebastian Usher.
Aid groups - a lifeline for millions of Yemenis - are being squeezed out of existence in areas under the control of the rebels, the BBC hears.
Shahid Butt will stand in Birmingham's council election and says his conviction in 1999 was unsafe.
The BBC sees sites on former United Arab Emirates bases in Yemen where detainees say they were abused.
With little military experience, Khalil went to war to support his family and ended up captured and forgotten in prison, with no prisoner swap.
Aidarous al-Zubaidi, head of the UAE-backed Southern Transitional Council, fled to Somaliland by boat before flying to Abu Dhabi, according to the coalition.
The presidency also expels Aidarous al-Zubaidi, head of the UAE-backed Southern Transitional Council, after he fails to fly to Riyadh for talks.
It comes after clashes and an independence bid in southern Yemen bring Saudi and UAE-backed forces into confrontation.
