The source you have provided does not say anything about the case "unraveling".
You are focused like a laser on absolute trivia, none of the things you claim to prove that Iran is bringing terrorism to Europe would be more than an individual loose cannon even if they were proved to be true. And they are all failed actions. Then there is the hypocrisy behind your outrage; the fact is that you could care less if Europe disappeared off the map. Your outrage is quite overdone.
These "terrorist" accusations against Iran are all a smokescreen coming from the people who are actually behind the campaigns to cripple Iran. They have been originally brought about by Iran's support of the Palestinians in their struggle against the Zionists. The accusation that Iran is supporting "terrorism" because it supports Hezbollah is a misplaced accusation. The militant wing of Hezbollah is an irregular force conducting gorilla warfare; (would you expect them to wear red coats and stand in a line in the manner of a British Army of the 18th century)? They use gorilla tactics that the Zionists try to label as being "terrorist" because that makes it sound like they are Al Qaeda. It's a misplaced accusation from the get-go. It's a rhetorical device.
Behind it all is the fact is that Iran is no threat to Israel anyway; Hezbollah just conducts pin prick operations that keep the Palestinian issue in the news. The amount of damage they cause Israel is miniscule compared to how much damage Israel has and continues to cause the Palestinians and is no threat to Israel's existence unless one were to think in political terms; but that isn't even a possibility. Generally speaking, Europe sees the Palestinian issue through the same eyes as Iran, they are not enemies, Iran is not out to "destroy" Europe or visa versa. So these charges of Iran making terrorist action against Europe can't be anything other than anomaly, (or false flag) anyway.
Then there is the fact that you are an American and the United States sits 8,000 miles away from Iran, Iran is no threat or even concern of the US.
Your zealotry is peculiar to say the least; it's as if you have internalized all of one side's propaganda and elevated it to existential proportions. What makes you such a diehard supporter of Israel's genocide against the Palestinians and such a chump for Israeli propaganda?
For the rest of us, your rhetoric sounds exactly like the rhetoric that got us into the unmitigated disaster known as Iraq and for people as old as I am, your alarmist charges against Iran sound very much like the "Vietnam will go communist and the world will come to an end" talk we used to hear in the 60s. You just don't come across as a person who has actually given your own position any thought.