emen
The Saudi-led coalition has now been conducting air strikes on Yemen's Houthi rebels for more than a year, at enormous cost to both sides.
People gather outside the house of court judge Yahya Rubaid after a Saudi-led air strike destroyed it, killing him, his wife and five other family members, in Yemen's capital SanaaImage copyrightReuters
Image caption
The aftermath of the Saudi-led air strike in Sanaa
More than 6,000 Yemenis have died, not all from air strikes, while the war has cost Saudi Arabia an estimated $5.8bn at a time of budget deficit.
The US is uncomfortable with this seemingly unwinnable war yet it continues to provide Riyadh with intelligence, refuelling and hardware.
While the war rages on, the US and Saudi continue to co-operate on hitting al-Qaeda bases in southern Yemen with unmanned drone strikes.