Iran’s government is celebrating four decades of “revolution.” Since 1979, it has exported violent destabilization to Lebanon, Syria, Iraq and my country, Yemen, and sponsored terrorist attacks on almost every continent. Iran’s leaders have enriched themselves at the expense of their people, and intimidated nations far beyond their borders. Happy 40th anniversary!

But leave us out of it. For four years, war has afflicted Yemen’s people, precipitated by the Iran-backed Houthi militias’ coup in Sana’a and attempted takeover...