Even before a U.S. airstrike “obliterated” a trio of Iranian nuclear facilities over the weekend, the country’s radical Islamist government was already leveling death threats and allegedly plotting assassinations on American soil.

Federal authorities have called Iran the world’s largest state sponsor of terror, and the FBI says the Iranian government has both imprisoned Americans within its territory on unsubstantiated charges and harassed and even killed dissidents in exile. 

“Iran’s nuclear enrichment facilities have been completely and totally obliterated,” President Donald Trump said during a nationally broadcast statement from the White House Saturday after American stealth bombers blasted three facilities. “And Iran, the bully of the Middle East, must now make peace. If they do not, future attacks would be far greater and a lot easier.”

Manssor Arbabsiar was sentenced to 25 years in prison for his role in a conspiracy to kill the Saudi ambassador to the U.S. (Nueces County Sheriff’s Office)

With $100,000 from Iran’s Quds Force, the Iranian military division run by Soleimani, Arbabsiar tried to hire an assassin from a Mexican drug cartel who was actually a DEA informant.

Iranian Big. Gen. Amir Ali Hajizadeh, head of the country’s “Aerospace Force,” had called for the deaths of Trump, former U.S. Secretary of State Mike Pompeo and other U.S. officials in the aftermath of Soleimani’s death. He was one of several high-ranking Iranian leaders killed in Israeli airstrikes last week.

Federal prosecutors have also blamed Iranian agents for cybercrimes, including attacks on presidential campaigns from both parties.

On Monday, Iran fired missiles toward the U.S.-run Al Udeid Air Base in Qatar – the Pentagon’s largest military installation in the Middle East.

None of them reached the base, Fox News reported.

Fox News’ Liz Friden and Emma Colton contributed to this report.