The Saudi-led intervention in Yemen is an intervention launched by Saudi Arabia on 26 March 2015, leading a coalition of nine countries from West Asia and North Africa, in response to calls from the pro-Saudi president of Yemen Abdrabbuh Mansur Hadi for military support after he was ousted by the Houthi movement due to economic and political grievances, and fled to Saudi Arabia.'
And of course -
Supported by:
United States
U.S. Navy (logistic support and assistance with the naval blockade of Houthi-held territories)
United States Army (Special Forces)
United Kingdom (training, intelligence, logistical support, weapons, and blockade)