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By Janet McBride! l& \- N, I% T0 ^1 r+ k
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LONDON (Reuters) - Oil rose towards $70 on Wednesday as U.S. warships put on a show of force off Iran's coast, coinciding with a United Nations agency report that said the Islamic republic had expanded its nuclear programme. ]6 k: v% r# `" r+ l) J$ _) T. @: }9 s% \* ^