"when from everything that I've read and experienced (12 years in the Middle East) there have been no implications of Iran in modern terrorist activities?"
- Iran does not recognize Israel.
- Iran supplies political support and weapons to Hamas,[14] an organization classified by Israel, the United States, Canada, the European Union and Japan as a terrorist organization. Mahmoud Abbas, President of the Palestinian National Authority, has said "Hamas is funded by Iran. It claims it is financed by donations, but the donations are nothing like what it receives from Iran".[15] From 2000 to 2004, Hamas was responsible for killing nearly 400 Israelis and wounding more than 2,000 in 425 attacks, according to the Israeli Ministry of Foreign Affairs. From 2001 through May 2008, Hamas launched more than 3,000 Qassam rockets and 2,500 mortar attacks into Israel.[16]
- Iranian proxies killed an estimated 1,100 US troops in Iraq.[35] In addition, insurgents supported by Iran reportedly committed acts of terrorism.[34][36][37]
Lots more here: http://en.wikipedia.org/wiki/Iran_and_state-sponsored_terror...
I am not claiming these are all fact, but I think there is little doubt that they are at least "implications" as you put it.
(edited for formatting.)