I've never seen an episode of Game of Thrones, but I'll bet somewhere in the series is a fat, bloated, wealthy, corrupt absolute monarch who deludes himself that his expensive army makes him invulnerable, and therefore free to provoke insurrection and unrest in other kingdoms. Such in reality is the House of Saud, covert promoters and sustainers of the Sunni bigots in the Islamic Civil War, and secret supporters of ISIS - for as long as those barbaric butchers exercise their terror and destruction elsewhere than the Kingdom of Saudi Arabia.
The problem is that ISIS have grown beyond their control, and have vowed to take control of the Holy Places of Mecca and Medina. And when they do, the fat pederasts that are the princes of the House of Saud will be impaled on sharpened stakes through their arses.
Whilst we fly bottled water from the UK to northern Iraq, the thirty C-130 Hercs (below) of the Saudi Air Force sit idle on the runway - for the Saudis would also be happy to see the Yezidi exterminated, along with the Shi'a. Nor will their ground-attack jets knock out ISIS forces. But their support from the US is waning, as that nation becomes less dependent on Saudi oil, and the Saud state is so corrupt, so rotten and so dependent on non-Saudis with no loyalty to the fat sheikhs that it is ripe for pushing-over. They will reap as they sow.