7 S, x+ k0 G' {; W+ H+ [" L- HBy Janet McBride : q: }" l t& I+ @ ) R7 `* J' [+ V) P$ l5 oLONDON (Reuters) - Oil rose towards $70 on Wednesday as U.S. warships put on a show of force off Iran's coast, coinciding with a United Nations agency report that said the Islamic republic had expanded its nuclear programme. 7 E' b7 e D8 h+ t& S$ n. z5 ]- [$ p& p