Aamir Khan: Dhoom:3 my toughest role so far

In the last couple of years, the 48 year old star gave hits in the form of Taare Zameen Par, Ghajini and 3 Idiots and his role in each of them was as different as chalk to cheese. But he said, I think Dhoom: 3 is my toughest role so far. I have never played anything like this before.Every movienews