Wall Street JournalOil Prices Climb After OPEC DealWall Street JournalOil prices continued to push higher Thursday, building on gains following the Organization of the Petroleum Exporting Countries' agreement to cut output. OPEC's surprise proposal …

CNBCOil crashes to $30 a barrelCNNMoneyOil plummeted below $30 a barrel on Tuesday for the first time since December 2003. The latest wave of selling leaves crude oil down 19% this year alone. It represents an incredible 72% plunge from crude oil's Jun …

ReutersIran nuclear deal could make oil even cheaperCNNMoneyIran's economy is heavily reliant on oil exports, yet sanctions have crippled the nation's ability to sell its oil on world markets. The country exports just 1.3 million barrels a day now, …