Parts made by more than a dozen US and Western companies were found inside a single Iranian drone downed in Ukraine last fall, according to a Ukrainian intelligence assessment obtained exclusively by CNN.The assessment, which was shared with US government officials late last year, illustrates the extent of the problem facing the Biden administration, which has vowed to shut down Iran’s production of drones that Russia is launching by the hundreds into Ukraine.We are assessing further steps we can take in terms of export controls to restrict Iran’s access to technologies used in drones.” There is no evidence suggesting that any of those companies are running afoul of US sanctions laws and knowingly exporting their technology to be used in the drones.Even with many companies promising increased monitoring, controlling where these highly ubiquitous parts end up in the global market is often very difficult for manufacturers, experts told CNN.Zelensky also said that Ukraine had intelligence that Russia “is planning a prolonged attack with Shaheds,” betting that it will lead to the “exhaustion of our people, our air defense, our energy sector.” A separate probe of Iranian drones downed in Ukraine, conducted by the UK-based investigative firm Conflict Armament Research, found that 82% of the components had been manufactured by companies based in the US."