WASHINGTON, Jan 31 (Reuters) - The United States on Tuesday put new trade restrictions on seven Iranian entities for producing drones that Russia has used to attack Ukraine, the U. Since Russia launched its war against Ukraine in February 2022, the United States and over 30 other countries have sought to degrade its military and defense industrial base by using export controls to restrict its access to technology. The United States has provided two NASAMS to Ukraine and more are on the way