BBC: BP says it has temporarily stopped oil flowing into the Gulf of Mexico from its leaking well. It is the first time the flow has stopped since an explosion on the Deepwater Horizon rig on 20 April. US Oil Spill Damage assessment Which way forward for BP? Ways BP has tried to stop the leak BP facing 7-year US offshore ban The well has been sealed with a cap as part of a test of its integrity that could last up to 48 hours. US President Barack Obama said the …