Trump says change of power in Iran would be ‘best thing’, as he sends second carrier

US President Donald Trump said on Friday that a change of government in Iran would be the “best thing that could happen”, as he sent a second aircraft carrier to the Middle East to ratchet up military pressure on the Islamic republic.Trump’s comments were his most overt call yet for the toppling of Iran’s clerical establishment, and came as he pushes on Washington’s arch-foe Tehran to make a deal to limit its nuclear programme.At the same time, the exiled son of the Iranian shah toppled in the 1979 Islamic revolution renewed his calls for international intervention following a bloody crackdown on protests by Tehran.“Seems like that would be the best thing that could happen,” Trump told reporters at the Fort Bragg military base in North Carolina when a journalist asked if he wanted “regime change” in Iran.Trump declined to say who he would want to take over in Iran from supreme leader Ayatollah Ali Khamenei, but he added that “there are people”.He has previously backed off full-throated calls for a change of government in Iran, warning that it could cause chaos, although he has made threats towards Khamenei in the past.