Wall Street Journal | Oil Prices Gain in Second Quarter Wall Street Journal U.S. oil prices rose on Tuesday, posting a 25% quarterly gain, after Iran and six world powers extended the deadline for nuclear talks until July 7. Prices posted their largest single-quarter percentage gain since 2009 on expectations of a drop in U.S. ... Oil bounces off three-week lows as Greek debt default looms Optimism wins; crude oil recovers Oil prices retake lost ground after markets cool on Greece crisis, Iran deal |