The content originally appeared on: CNN (CNN)The US believes Russian officials have begun training on drones in Iran over the last several weeks, the latest sign that Russia intends to purchase the systems as the war in Ukraine continues. 'During the last several weeks, Russian officials conducted training in Iran as part of the agreement for UAV transfers from Iran to Russia,' a US official told CNN. The official said the intelligence about the training has recently been declassified. CNN […]