WASHINGTON, Dec 7 - Struggling to maintain a steady supply of arms for its war in Ukraine, Moscow is looking to Iran once again to resupply the Russian military with drones and surface-to-surface missiles, The Associated Press reported citing two officials familiar with the matter.

There is growing U.S. concern that Russia may seek to acquire additional advanced conventional weapons from Iran, according to a National Security Council official who spoke on condition of anonymity to discuss U.S. intelligence. The official said the administration is particularly concerned that Russia may seek to acquire surface-to-surface missiles from Iran.