# H% p' L; m* ~By Janet McBride# a* O/ `8 I& l( f1 G- A9 ^1 y2 b
, D: o. |" w6 W% I! i" xLONDON (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./ x" F2 f* @9 J: p% x