Where’s the link?
Dirty nuke?
With Israel massing troops against Lebanon and Syria - either to prevent retaliation after an attack on Iran, or if war breaks out on their borders, the Ahmadi-Nejad arrogance is serious.
It could be a dirty nuke on Israel (regardless that it would also pollute Palestinians - or equally likely an EMP (electro magnetic pulse nuke bomb - no human damage) on a Western target.
Iran has had that technology for quite some time and has delivery capability from an offshore rust bucket cargo ship if need be.