i'm geeta guru-murthy. also in this program -- titanic director james cameron resurfaces from the deep after diving to the bottom of the ocean. and tiger's back in the hunt. woods secures his first pga tour victory in over two years. >> in afghanistan, a gunman wearing an afghan army uniform has killed two nato troops in the south of the country. the attack appears to be the latest in a string of shootings in which afghan security forces have turned on their international colleagues. an official in southern afghanistan has said the shooting happened inside the main nato base. the bbc's reporter is in cab and you will gave me the latest on the shootings. >> we understand from officials that an individual wearing a uniform opened fire, killing two nato service members. in a statement, they said that the gunman was killed as well by coalition forces. but afghan officials in helmand are now confirming to the bbc that the soldier was a member of the afghan national army, and he's killed two service members from

i'm geeta guru-murthy. also in this program -- black children in south africa to private schools as the state school system is widely seen as failing. and tiger woods limps out of his latest golf tournament, raising doubts as to whether he'll make the masters. >> activists in syria say there's been another gruesome massacre. the bodies of women and children have been found in the city of homs. some reports are suggesting that up to 47 people might have been killed. the bbc has received pictures, but they are too distressing to show. the country's state television has blamed armed terrorist gangs for the killings. the bbc's middle east correspondent is on the line now from beirut. john, details still coming in on this. >> destays still coming in, and as ever, difficult to verify, with particular regarding the numbers. some opposition activists saying up to 47 killed, others saying at least 12. i've looked at some of the video footage that's been released, and it makes a pretty grim viewing. in one video, at

i'm geeta guru-murthy. also in this program -- what do you do with $100 billion? apple tells us its plans for its fast-growing cash mountain today. and one of the symbols of the city, sydney's harbor bridge celebrates its 80th birthday. >> reports are coming in of a shooting outside a school in toulouse. three people have been killed, two of them children. a man fled on a motor bike from the scene in toulouse, where, in the same region last week, three paratroopers were shot dead by a man on a motor bike. there was also another attack on an ununiformed soldier a few days earlier, again, in a similar manner. let's get more now from kate davenport, a freelance journalist, on the line from toulouse. what more do you know about this attack today on the school? >> well, it seems that the shooting happened at 8:00 this morning just as children were preparing to go to school. it's at a jewish school, as you said, the ozar hatorah school, which is a former synagogue. it's reported, according to parents at the schoo