US Justice Department charges Iranian with trying to assassinate John Bolton - CNN

After the strike, leaders of the terrorist organization vowed "revenge against Americans" for Soleimani's death and publicly lashed out against then-President Donald Trump and other high-ranking officials in his administration.

Prosecutors said Shahram Poursafi, a 45-year-old Iranian national and IRGC member, attempted to pay $300,000 to an individual in the United States to kill Bolton and said he had a "second job" for $1 million.

Former Secretary of State Mike Pompeo was also a target of the Iranian assassination plot, according to a federal law enforcement source familiar with the investigation and a source close to Pompeo.

"Their radical, anti-American objectives are unchanged; their commitments are worthless; and their global threat is growing."

Speaking with CNN's Wolf Blitzer on "The Situation Room" Wednesday evening, Bolton quipped that he was "embarrassed at the low price" allegedly offered to assassinate him.

The former national security adviser said he has "long had a general understanding of what the threat was" from Iran but learned many of the specifics of the assassination plot from documents released by the Justice Department earlier in the day.

"I think it's quite correct to say many other Americans are in the targets of this regime.

Security provided

Pompeo, who also served as CIA director under Trump, has received continuous security since the end of the Trump administration because of threats from Iran, the source close to him said.

Former Ambassador Jim Jeffrey, who served as special representative for Syria and special envoy to the Global Coalition to Defeat ISIS under Pompeo, said that "Pompeo was central to the Trump administration's strategy and execution of Iran policy as" CIA director and secretary of state.

Jeffrey said that "given (the) record of Iranian assassinations in Europe and aborted ones there and here," including the failed plot against the former Saudi foreign minister at a DC restaurant in 2011, "the threats should be taken seriously."

Multiple current and former US officials continue to receive significant personal security due to the Iranian IRGC threats, according to a source directly familiar with all of those being protected.