Riyadh drone attempt was a major escalation and people took notice. This would ignite the Middle east and that place it is like gas if you ignite it once the whole place burns. The Saudis may have not wanted war initially but they would have no choice but to exit the cursed Yemeni UN brokered ceasefire and exit all UN workers dropping leafets to Sanaa and other areas to begin bombing it indiscriminatingly and then proceed to invade Iraq together with NATO arab (UAE, Saudi, Egypt, Jordan, Qatar, Bahrain, Oman, Morocco, Algeria, Kuwait, Tunisa and Sudan) They could mobilize the manpower needed to even invade further into Iranian territories.