71 killed in Israeli attack on Iran prison, official says

The Islamic Revolutionary Guard Corps issued a direct warning to the United States on Monday, saying Iran will act directly against the U.S.

"Trump, in violation of all the international rules, entered the territory of our dear Iran, and attacked three points of our holy soil, and has caused damages," IRGC Maj. Gen. Abdolrahim Mousavi said on Monday.

"Regardless of the amount of the damage incurred from this unwise measure, the mere act of crime and violation won’t be left unanswered, with Allah’s help. This act by Trump was carried out due to despair and to assist its proxy force, the Zionist Regime, especially Netanyahu himself," Mousavi said.

He added, “While we will continue punishment of Netanyahu, with Allah’s permission, powerfully to the point of his misery, we will determinedly act against this mistake by the US, in accordance with the violator’s act.”

-ABC News’ Will Gretsky

Qatari authorities announced on Monday the temporary suspension of air traffic in the country's airspace out of concern for the safety of citizens, residents and visitors, according to the Qatari Foreign Ministry.

A high-level U.S. defense official said, "We only close airspace if we are convinced the threat is real.”

-ABC News’ Will Gretsky and Kyra Phillips

President Donald Trump is lashing out at Russian official Dmitry Medvedev, who claimed countries would be lining up to supply Iran with nuclear weapons following the American strike.

Medvedev, the deputy chairman of Russia's security council, posted on X Sunday night that "a number of countries are ready to directly supply Iran with their own nuclear warheads."

Trump took to his own social media page to call out Medvedev's claims, arguing the word "nuclear" shouldn't be used so casually.

"Did I hear Former President Medvedev, from Russia, casually throwing around the 'N word' (Nuclear!), and saying that he and other Countries would supply Nuclear Warheads to Iran? Did he really say that or, is it just a figment of my imagination? If he did say that, and, if confirmed, please let me know, IMMEDIATELY," Trump posted on Monday, though Medvedev did not say Russia was ready to provide nuclear weapons to Iran.

"The 'N word' should not be treated so casually," he added.

-ABC News' Lalee Ibssa

Iran has the possibility of retaliating within a "sweet spot" without provoking another round of attacks from the U.S., but overall has a "wide range of options," according to ABC News contributor Steve Hill, an honorary professor in the Department of War Studies at King's College London.

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Iran has ‘wide range of options’ for retaliation after attack: ExpertABC News contributor Steve Hill says there is a path for Iran to retaliate which wouldn’t provoke another round of attacks from the U.S.

ABCNews.com

"If they go to the extreme and really start attacking American forces and killing American citizens as well as military forces, that almost forces a retaliation from the American side," Hill said. "Complete capitulation after some demonstrative attacks possibly against Israel, that seems more likely."

"But the reality is, there is probably a sweet spot in the middle where the Iranians do enough to justify to their own people that they have retaliated, but not enough to provoke another round of attacks from the Americans so that this remains a one-off," Hill added.