the US from attacking Tehran. He said: "The most appropriate means of deterrence that Iran has, in addition to a retaliatory operation in the [Persian Gulf] region, is to take action against London." He also suggested a propensity to attack could arise from a "usually adventuresome" second term presidency. He said: "US presidents are usually adventuresome in their second terms... [Richard] Nixon, disgraced by the Watergate scandal; [Ronald] Reagan, with the 'Irangate' adventure; [and Bill] Clinton, with Monica Lewinsky—and perhaps George Bush, the sitting president, will create a scandal connected to Iran's legitimate nuclear activity so as not to be left behind." His speculation led him to suggest a clash could occur between the 2008 U.S. presidential elections and by the time the new president enters office in January 2009. "In the worst-case scenario, George Bush may perhaps persuade the president-elect to carry out an ill-conceived operation against Iran, prior to January 20, 2009—that is, before the regime is handed over and he ends his presence in the White House. The next president of the US will have to deal with the consequences." 2009 Iranian election controversy In the aftermath of the disputed 2009 Iranian presidential election and the protests that followed, UK-Iran relations were further tested. On 19 June 2009, the Supreme Leader of Iran Ayatollah Khamenei described the British Government as the "most evil" of those in the Western nations, accusing the British government of sending spies into Iran to stir emotions at the time of the elections, although it has been suggested by British diplomats that the statement was using the UK as a "proxy" for the United States, in order to prevent damaging US–Iranian relations. Nonetheless, the British Government, unhappy at the statement, summoned the Iranian ambassador Rasul Movaheddian to the Foreign Office to lodge a protest. Iran then proceeded to expel two British diplomats from the country, accusing them of "activities inconsistent with their diplomatic status". On 23 June 2009, the British Government responded, expelling two Iranian diplomats from the United Kingdom. Prime Minister Gordon Brown stated that he was unhappy at having to take the action, but suggested there was no option after what he described as 'unjustified' actions by Iran. On 24 June 2009, Iranian Foreign Minister Manouchehr Mottaki announced that the country was considering 'downgrading' its ties with the UK. Four days later it was reported that Iranian authorities had arrested a