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By Janet McBride/ v5 Q5 i! y( O" P( P! q& t
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LONDON (Reuters) - Oil rose towards $70 on Wednesday as U.S. warships put on a show of force off Iran's coast, coinciding with a United Nations agency report that said the Islamic republic had expanded its nuclear programme.+ ?. |0 X7 C8 p( s) l# \: P
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