; f8 e. t# Z- x$ Y- j8 {LONDON (Reuters) - Oil rose towards $70 on Wednesday as U.S. warships put on a show of force off Iran's coast, coinciding with a United Nations agency report that said the Islamic republic had expanded its nuclear programme. 7 F( g* ~ ~6 }$ \0 O+ Q2 @! p" a. g' L4 T