Saudi energy minister says kingdom must make 'serious' response to attacks

​Saudi ‌Energy Minister ​Prince Abdulaziz ‌bin Salman said the events of ‌recent weeks ‌were serious and the kingdom's ⁠response ​must ⁠be "equally serious", as Yemen's ⁠Houthis step up ​attacks on the ⁠kingdom, killing ⁠more than ​15 people in two ⁠weeks.