Arafat and Saddam to my knowledge are not Muslims but secularists. Bin Laden may be a private Muslim person but is unqualified as a Muslim leader as explicitly stated by Mullah Omar himself: http://www.upi.com/ [broken link]
Some Ayatollahs may have the opinion to say but not their principal leader at this time, the president of Iran who is one person of wisdom and moderation worth a million Blairs and Bushes. As for Hamas, they are the product of Israeli terrorism. Remove the latter and you will cut their lifeblood.
If you are seriously interested in the true Islamic position on terrorism read: - expired link (before 2023-02-05) webpages.marshall.edu/~laher1/TERRORISM.HTML Peace to those who follow guidance. Hajj Gibril
"In any case, what Westerners call civilization, the others would call barbarity, because it is precisely lacking in the essential, that is to say, a principle of a higher order."
René Guénon, East And West, 1924
صلّى الله على سيّدنا محمّد و على آله و صحبه و سلّم
The blessings and peace of Allah on the Prophet, his Family, and his Companions, ( sallAllahu `aleihi wa sallam ) .