By Steven Erlanger The New York Times

European countries have taken their boldest step so far in the increasingly tense standoff with Iran over its nuclear program, agreeing in principle to impose an embargo on Iranian oil, French and European diplomats said on Wednesday.

President Obama worked on Tuesday to bridge differences among allies about how to manage the military campaign in Libya, as airstrikes continued to rock Tripoli and forces loyal to Col. Muammar el-Gaddafi showed no sign of ending their sieges of rebel-held cities. On a day when two United States airmen bailed out over Libya and were rescued after t...

European countries have taken their boldest step so far in the increasingly tense standoff with Iran over its nuclear program, agreeing in principle to impose an embargo on Iranian oil, French and European diplomats said on Wednesday.

President Obama worked on Tuesday to bridge differences among allies about how to manage the military campaign in Libya, as airstrikes continued to rock Tripoli and forces loyal to Col. Muammar el-Gaddafi showed no sign of ending their sieges of rebel-held cities. On a day when two United States airmen bailed out over Libya and were rescued after t...