The Wall Street Journal reports that Iranian intelligence support has enabled the Houthis to mount more potent attacks on Saudi Arabia and its Yemeni allies. Citing sources briefed on intelligence from Saudi Arabia and Yemen's anti-Houthi alliance, the report indicates Iran's assistance has helped the Houthis gain territory on Yemen's Red Sea coast and launch strikes on Saudi oil facilities and airports, including a raid last week in Riyadh that killed 13 people. Iran denies interfering in Yemeni affairs, stating the Houthis are "entirely independent actors."