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By Janet McBride8 W1 }! i1 h- R
, C7 e+ n+ R, {# |& yLONDON (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.9 w/ V6 w- @* y- n. Y( B( X