You think Netanyahu is worse that Adolph Hilter? Did you forget about the MILLIONS he slaughtered and threw into concentration camps? The nations he invaded and forced to fight for him? Please cite your statistics, body counts, and world invasion plans that beat hilters. Either you do this, or confirm you're trolling. - - - Updated - - - Very true. I'd say he's the worst US leader, but no where near Saddam or Hitler.
Your question is who is the worst leader, not who is the worst person. Whoever made the worst decisions, setback their country, and/or endangered their citizens lives pointlessly is a bad leader. Therefore, I ask all the people who chose Hitler to think for a second. He brought his country out of the worst economic depression in history, annexed twice the size of his country, progressed his country, made logical decisions (until his doctor pin cushioned him with drugs), and saved a lot of his middle and lower class's lives. Under the standards of a good leader, he ranked high. A good person, well that's a different story.
Im going to have to say Bush was worse than Saddam as far as a leader goes. At least Saddam inspired his people somewhat.