- X z5 H3 f, F( YBy Janet McBride 5 R% P u2 S1 j1 z % Y+ I8 ?# K. ]6 ^6 y- \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.: s- s: l# v& x' E) p- w