Iran proxies were extremely active in Syria, as they were close allies of the Assad regime. They are responsible for countless exactions.
In 1992 there was a deadly car bomb attack in Argentina, killing 29 people and injuring 250 more. Then again in 1994 a Jewish community center in Buenos Aires was bombed, killing 87 people. Eventually the investigation demonstrated conclusively that Iran was responsible.
You have better examples for Iran like Hezbollah and Hamas.
Albeit Hamas has been largely propped by Israel itself and Qatar.