Kadima MK Nachman Shai on Thursday implored Prime Minister Binyamin Netanyahu to "end the campaign of his pictures and words" to bolster Republican Mitt Romney in the US presidential elections.

"Every such interference does damage both immediately and in the long run, and the prime minister should ensure that his name and words will not be used in any way whatsoever in the US election," Shai said.

The comments came as a Republican-linked group in the US began airing an ad in Florida featuring Netanyahu criticizing the international community -- and the US by implication -- on Iran policy.

Even if such actions are taken without the prime minister's consent, Shai said, they cause damage to Israel, involving it in American elections in an "unprecedented way."

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