Western leaders fear Russia traded nuclear secrets to Iran in exchange for ballistic missiles aimed at Ukraine, escalating global tensions.

American and British leaders are growing concerned that Russia may be sharing nuclear secrets with Iran to bolster its weapons program in exchange for ballistic missiles to bomb Ukraine, according

Iran's President Masoud Pezeshkian said on Monday that his government had not transferred any weapons to Russia since it took office in August, after Western powers accused Tehran of delivering ballistic missiles to Moscow in.

Iran recently transferred short-range ballistic missiles to Russia to use in the war against Ukraine, according to two sources familiar with the intelligence, completing a delivery that US and Western officials had warned was in the works for almost a year.

The US and UK are increasingly concerned that Russia is sharing with Iran secret information and technology that could bring it closer to being able to build nuclear weapons, in exchange for Tehran providing Moscow with ballistic missiles for its war in Ukraine.

Britain and the US fear Russia may have shared nuclear secrets with Iran in exchange for missiles to use in its war against Ukraine.

Intelligence suggesting new nuclear cooperation between Iran and Russia adds to concerns over Tehran’s rising uranium stockpile