1) Earlier on, I was seeing BBC Hard Talk with Tun Dr. Mahathir over You Tube. Seeing how heat debate took place between Stephen Sackur and Tun Dr. Mahathir. And later discovered that Anwar Ibrahim have the same either.
2) As usual he was very sharp in his argument and has no slight hesitation in revealing his notions. Unlike Anwar Ibrahim as you can see above, there were several occasions, Stephen Sackur was forced to ascertain, especially during early debate. Still he did not giving his definite answer in one of those occasions. Its probably due to he trying to obscure the truth that could cause retaliation against him.
3) Below are the videos with Dr. Mahathir for you to evaluate. Sometimes it is not too hard to find the truth, its just needs our mind sharpness, deep understanding about the whole issues and have a clear mindset and not being preconceive.