Coinrail Hack See's Markets Crash As $40 Million Stolen A small toy figure is seen on representations of the Bitcoin virtual currency in this illustration picture, December 26, 2017. The latest attack highlights the lack of security and weak regulation of global cryptocurrency markets .
The Saudi-led coalition faces widespread global criticism for its air attacks in Yemen that have killed many civilians.
Riyadh accuses its regional rival Tehran of supplying the Houthis with ballistic missiles, a charge Iran denies.
Saudi Arabia, the UAE and other Arab joined the Yemen war in March 2015, to help support the Yemeni government which had fled the capital Sanaa in 2014.
Almost 10,000 people have been killed since the alliance launched its intervention in Yemen in March 2015, contributing to what the United Nations has called the world's worst humanitarian crisis.