29 July 2012 Last updated at 14:57 ET
Romney: US has moral duty to block Iran nuclear plans
Mr Romney is hoping the visit will boost his pro-Israel credentials with US voters
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US Republican presidential candidate Mitt Romney has said his country has a "moral imperative" to stop Iran from developing nuclear weapons.
link-
http://www.bbc.co.uk/news/world-us-canada-19035134