The United States has imposed sanctions on Russia-based people and entities working to help procure weapons and commodities — including stolen Ukrainian grain — for Yemen’s Iran-backed Houthis, the Treasury Department says. The operatives, who included Russia-based Afghan businessman Hushang Ghairat and his brother, Russia-based Afghan businessman Sohrab Ghairat, helped senior Houthi official Sa’id al-Jamal, procure millions of dollars’ worth of commodities from Russia for shipment to Houthi-controlled Yemen, Treasury says.