The spate of Houthi attacks on civilian and energy infrastructure in Saudi Arabia has triggered intense speculation about the game plan of the Yemeni group and its backers in Tehran. Why, many ask, have the Houthis chosen to target the Kingdom after largely sitting out the US-Israeli war on Iran and failing to match their fiery anti-Israel rhetoric with comparable action? After all, the 2022 truce had brought a measure of calm to war-shattered Yemen and the wider Arabian Peninsula. For the rest