Iran should have plenty of material for a dirty bomb from their joint Russian reactor project many many years back. The problem is that the US can fingerprint Uranium to where it was mined after a blast due to each mine having their own set of impurities based on the region the material came from.
If the he material used in the peaceful electrical reactor project ends up in a bomb, it could be used as Casus Belli for a Nuclear Reaponse against Iran and Russia by Israel and the US.
My tinfoil hat theory is that he was on the run after being deposed. The Cartel has a new head and wanted to remove any trace if the old regime, which is why he took El Chapo’s kid to Texas.
Or an even crazier idea is that he’s the payment for those tourists that got killed a few months ago.