Following the Russian Revolution they began to support small and large "revolutionary movements" AKA terrorist groups around the world.
Groups like the IRA, PLO and FARC were all sponsored and trained by the same root group.
The USSR was not as interested in revolutionary purity as they were in just causing chaos that they could exploit.
So that is why you had the IRA training in Libya and shelling churches in Columbia.
The ME connection to terrorism in South America is decades old.
When the USSR fell these groups had a financial problem, happily for them two groups were willing to fund them. The mohammedans and the drug lords. Like the USSR they were not interested in ideological purity but in causing chaos.
So while people may say this is the first proof that a particular ME terror group is involved in terror with another certain terror group in South America the relationship is long standing and should surprise no one.
#1: It will only surprise those who do not know what you wrote, meaning except for you and me and another handful of people. The majority have no idea what you are talking about, unfortunately.
That is why it is important to explain, again and again.
#2: Having a terror group such as Hezbollah so close to US borders should be a BIG wake up call