> the whole world would be threatened.

Why? What do Hezbollah or the Houthis care about the world? They fight Israel, which is a genocidal regime.

This even ignoring the ludicrous idea that if they got a nuclear weapon they could deliver it anywhere.

Why do Al-quaeda organzied september 11 attacks? I can give countless example to show that they doesnt need a reason to attack. Its just religion that matters and their goal of global islamisation. Recently in pahalgam they killed 26 civllians by asking their religion and verifying it by asking them to pray.

You said israel regime as genocidal? What was the cause of all this issues? How many was killed in october attacks in israel? Why did they held hostages from different countries? So, yes i strongly believe that those terrorist doesnt need a reason to attack. Their goal is global islamisation. Khamenei had openly said that their number 1 enemy is America.