Adam Baron, a Yemen expert and fellow with Washington-based policy institute New America, told the WSJ that the recent Houthi military gains were "undeniably" based on external Iranian assistance. Iran has aided Yemen’s Houthis with intelligence and tactical guidance in their recent attacks against Saudi Arabia and its Yemeni allies, the Wall Street Journal reported. Key points and original sources are listed below.

• Adam Baron, a Yemen expert and fellow with Washington-based policy institute New America, told the WSJ that the recent Houthi military gains were "undeniably" based on external Iranian assistance.S1

• Iran has aided Yemen’s Houthis with intelligence and tactical guidance in their recent attacks against Saudi Arabia and its Yemeni allies, the Wall Street Journal reported.S2