Russia's secret cargo to Iran: US unprepared for Tehran's weapons boost?

Intensified Russian cargo flights to Iran are raising fresh concerns in Washington as U.S. pressure mounts during ongoing nuclear negotiations in Geneva. Flight tracking data shows a Russian Ilyushin Il-76 heavy transport aircraft completed four rotations to Tehran within just ten days, carrying undisclosed cargo. The development comes shortly after reports that Iran finalized a €500 million arms agreement with Russia, including 9K333 Verba man-portable air defense systems and 2,500 9M336 missiles to strengthen short-range, low-altitude defenses.