Trump is also expected to designate Iran’s most powerful security force, the Islamic Revolutionary Guards Corp (IRGC) as a terrorist organization, as he rolls out a broader, more hawkish U.S. strategy on Iran. He has threatened to decertify it, which could unravel the accord despite the wishes of Washington’s European allies, the majority of the international community and the US military.  Since the IRGC’s formal establishment following the 1979 Islamic Revolution, it has sparked controversy both at home and abroad. The Iranian foreign ministry has said the Islamic Republic will show a crushing response should the US list the Revolutionary Guards as a terrorist entity. “We are hopeful that the United States does not make this strategic mistake,” Foreign Ministry spokesman Bahram Qasemi was quoted as saying by the state news agency IRNA. “If they do, Iran’s reaction would be firm, decisive and crushing, and the US should bear all its consequences.” 
 
 
 
 The previous day, state media in Iran reported the head of the Revolutionary Guards threatening the US regional military bases if it was designated a terrorist group. IRGC commander Mohammad Ali Jafari said on Sunday, “If the news is correct about the stupidity of the American government in considering the Revolutionary Guards a terrorist group, then the Revolutionary Guards will consider the American army to be like Islamic State all around the world.” 
 
 Jafari also said that additional sanctions would end chances for future dialogue with the United States and that the Americans would have to move their regional bases outside the 2,000 km (1,250 mile) range of IRGC’s missiles. The Kremlin said that any U.S. withdrawal from the nuclear deal would have “negative consequences.” 
 
 British Prime Minister Theresa May, who supports the nuclear pact, and Israeli Prime Minister Benjamin Netanyahu, who opposes it, agreed in a phone call on Monday that they need to be “clear-eyed” about the threat Iran poses to the Middle East. According to Dalton, ditching the Iran deal would make it impossible to continue to monitor Iran’s nuclear programme “so thoroughly” and “risks setting the United States on a path of conflict with Iran at the time when the US and the world already have one nuclear crisis in the shape of North Korea.
– If the US designates Iran's Revolutionary Guards as a terrorist organization—as reports state President Trump is likely to do—it would be a "strategic mistake," according to Iran's foreign ministry. "Iran’s reaction would be firm, decisive, and crushing, and the US should bear all its consequences," the Guardian quotes ministry spokesperson Bahram Qasemi as saying Monday. Reuters reports the threats continued from Mohammad Ali Jafari, the commander of the Revolutionary Guards, who said such a decision would show "the stupidity of the American government" and would force the Revolutionary Guards to "consider the American army to be like [the] Islamic State." Jafari says the US would have to move its military bases in the region outside the 1,250-mile range of the Revolutionary Guards' missiles. The US has a complicated relationship with Iran's Revolutionary Guards, which is accused of supporting groups like Hamas and Hezbollah while also helping the US fight the Islamic State in Iraq and Afghanistan, the Atlantic reports. While the Revolutionary Guards itself has never been listed as a terrorist organization by the US, individuals and groups associated with it have. Experts say Trump designating it a terrorist organization would be a largely political move as the Revolutionary Guards has already had a number of sanctions placed on it by the US. Experts also say past attempts by the US to play tough with the Revolutionary Guards have only strengthened it in Iran, and Trump risks further escalating tensions with the country as he mulls a move to "decertify" the Iran nuclear deal.