In effort to promote support for sanctions against Tehran, US defense analysts reveal new evidence Russia using Iranian-made aircraft in Ukraine

Wall Street Journal says delegation was in Yelabuga last month to advance plans for facility that could produce 6,000 deadly UAVs

Sharp rhetoric from National Security Adviser Sullivan does not indicate a policy change as Washington seeks to isolate Tehran on international stage

Report says Biden administration working closely with Israel on matter, but blocking regime from acquiring parts proving tricky

Intelligence cited by Channel 12 indicates Iranian pilots are already training with Russian-made jets

Presidential adviser says Tehran gearing up to boost supplies to Moscow, ignoring international sanctions; Mossad chief also warns of increase in arms deliveries to Kremlin

Tehran rails at Ukrainian leader over speech to US Congress in which he accused the Islamic Republic of becoming an ally in Moscow's 'genocidal policy' against Kyiv

British defense secretary warns military components being traded for Iranian drones will 'undermine' region, international security; estimates Russian losses at 100,000 troops

FM spokesperson accuses Washington of waging propaganda war after CIA chief says Moscow's relationship with Tehran 'poses real threats' to Mideast allies

William Burns says start of 'full-fledged defense partnership' between Tehran and Moscow already has effect in Ukraine, could have 'an even more dangerous impact on Middle East'