Wow now that is quite a statement. Most people would probably place someone like Stalin, Mao or Pol Pot as the leftist version of Hitler. But I guess with all of Obama's gun control, no term limits, ban on private property, conscription, censored press, single party system, party military, establishment of national language, removal of ethnic minorities, etc etc etc how can one not see the similarities.
As for this fuss over Israel, relations are not poor or permanently damaged. This isn't the first time the US and Israel have had disagreements and it won't be the last. Bush and Clinton had disagreements with Israel over how talks with the Palestinians should go, and so does Obama, its nothing new and its not something thats going to change our relation with Israel.
Clinton had his Oslo Accords which didn't change anything.
Bush had his Road Map to peace which didn't really change much.
Obama has his own ideas which so far seem to be just as productive.
Also fun fact: Clinton, Bush and Obama all were/are against the expansion of Israeli settlements and Obama has in fact continued Bush's policy as defined in the "Road Map to Peace." Thats why all this hub-ub about settlements is coming from Obama, Israel is violating agreements of a BUSH policy. So if you are going to bash Obama for "destroying" US-Israeli relations you have to had just as much credit to Bush as well