If he openly converted to Christianity he had a death sentance on his head already. Doesn’t sound like he is trying to hide it.
He's not trying to hide it in public now... but from what I heard about him before, apparently it was known in the terrorist circles over there that he was a Christian before, too... but he didn't make a big deal out of it as his father was an important leader, and it probably did make a difference that his father was that important leader.
So, he managed to get by with it, even with him being known over there in the terrorist circles, back then, too.
If I'm not mistaken (and sometimes I do get mixed up with some of these former terrorists who have now become Bible-believing Christians), this may have been the guy who was also a driver for Arafat and he says that he actually talked to Arafat about Christianity (in other words, gave Arafat the "Gospel Message" from Scripture)... :-)
Now, you'll have to excuse me if it wasn't this particular guy, but I think it was. Nonetheless (and I'll check up on it), there was definitely someone who was Arafat's driver (a trusted driver, to keep Arafat safe) who did witness to Arafat about becoming a Christian. It sounds unbelievable, but it did happen.
Arafat wasn’t a religous Muslim, presumably the leader of Hamas is. If a Muslim converts to Christianity it’s the duty of Muslims, and especially of his family to kill him. I would be surprised that Arafat would allow the son of a Hamas leader to be his driver. But I could be wrong.