Russia has been capturing some of the US and NATO-provided weapons and equipment left on the battlefield in Ukraine and sending them to Iran, where the US believes Tehran will try to reverse-engineer the systems, four sources familiar with the matter told CNN. Exclusive: Iranian drones appear to contain modified explosives designed for maximum damage to Ukrainian infrastructure, report finds A key weapon in Iran’s inventory, the Toophan anti-tank guided missile, was reverse engineered from the American BGM-71 TOW missile in the 1970s. The State Department also said in an October fact sheet that “pro-Russian forces’ capture of Ukrainian weapons, including donated materiel, has been the main vector of diversion so far and could result in onward transfers