Former ambassador to US accuses unnamed Sky News Australia presenters of campaign against Kevin Rudd

Dennis Richardson claims an effort to make Rudd's life untenable' is at play, despite others also criticising Donald Trump in the past

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The former ambassador to the US Dennis Richardson has accused some presenters at Sky News Australia of running a campaign to undermine the former prime minister Kevin Rudd and end his tenure as the country's top diplomat to the US.

Richardson launched the broadside at unnamed program hosts on the News Corp-owned network, accusing them of trying to dictate who should represent Australia abroad.

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