Saudi Arabia tightens security after Bahrain pipeline blast

Saudi Arabia's energy ministry said pumping to Bahrain had been suspended and the kingdom was stepping up security precautions at its own facilities after its Gulf island neighbor blamed "terrorism" linked to Iran for an oil pipeline blast.Iran denies any role in unrest in Bahrain, host to the U.S. Fifth Fleet and a key Western ally, which has for years grappled with protests and sporadic violence.