Saudi Arabia is a fake country established by the Brits with a bloated royal family and controlled by a hated psychopathic nepo baby who has squandered his nations wealth on failed giga projects and has had to cutt welfare for his thousands of royal hangers on. Their military is designed to keep the population from rising up against the House of Saud. It has no interest in fighting the Yemenis, who are their relations. (Much of Saudi was part of Yemen until annexed by, you guessed it, the Brits.