Saudis cannot claim Iran being behind the actions of criminal groups like Al Shabab and Boko Haram because, as usual, they  are NOT Shia Muslims. Otherwise the Saudis can hardly be seen as wasting anything they can find about any Shia anywhere.

Those criminals in Kenya and Nigeria are roaming freely killing, abducting and enslaving people  but it is the Shia rebel in Yemen that is being attacked instead.