Iraq today signed a multibillion-dollar deal with Royal Dutch Shell PLC and Japan’s Mitsubishi Corp. to tap natural gas in the south, one of the biggest agreements by the OPEC member to develop an energy sector battered by years of neglect and war.

Financial stocks dragged Wall Street lower today as traders worried that last week’s rally was overdone.

A Yemeni guard opened fire today at the employees of an international oil company in Yemen, killing an Indian national and seriously wounding an American, two Britons, a Tunisian and a Yemeni man, security and local officials said.