ROME (Reuters) - The Italian government denied on Wednesday reports that its secret services passed fake documents to the United States to help bolster claims about Baghdad's pre-war nuclear ambitions. Italian newspaper La Repubblica has been running daily articles since Monday alleging that Sismi intelligence officials helped pass-off forged documents that accused Iraq of trying to buy 500 tons of "yellowcake" uranium from Niger. Prime Minister Silvio Berlusconi's office said in a statement the government and Sismi had no "direct or indirect role in the fabrication and the transmission of the 'fake dossier on Niger uranium."' La Repubblica accuses Sismi,...