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Silvio Berlusconi, the Italian prime minister, has been taken to hospital after being attacked in the city of Milan. The stunned 73-year-old was struck in the face at the end of a rally as he was signing autographs. This year has been the toughest in Berlusconi's political career but until now, his critics have been vocal - not physical. Al Jazeera's Claudio Lavanga reports.
