When people say factually inaccurate things, you can often tell whether they're deliberately mischaracterizing the truth or whether they just don't know what they're talking about. With Michele Bachmann, I really can't quite tell.
A couple of months ago, CNN's Anderson Cooper put together an amazing montage of Bachmann statements highlighting her addiction to falsehoods, but that did not dissuade her from continuing to blurt out unchecked allegations.
During a CNN-sponsored Republican debate a few weeks ago, Bachmann was predictably drumming up support for war with Iran, and claimed that Iranian President Mahmoud Ahmadinejad "said that if he has a nuclear weapon he will use it to wipe Israel off the face of the Earth. He will use it against the United States of America." This could be sound justification for a war, except Bachmann's allegation is completely devoid of truth. As CNN's Truth Squad points out, Iranian leaders never threatened to nuke Israel or the United States, and they couldn't have because they deny pursuing nuclear weapons in the first place.